diff --git a/RELEASE.rst b/RELEASE.rst
index dae25b1c31..8b7bc80d58 100644
--- a/RELEASE.rst
+++ b/RELEASE.rst
@@ -1,6 +1,16 @@
 Release Notes
 =============
 
+Version 0.66.0
+--------------
+
+- filter server-side, remove video count (#3287)
+- fix fallback when no language is selected (#3286)
+- set s-maxage via NEXT_CACHE_S_MAXAGE_SECONDS (#3280)
+- fix: assert run.title in DashboardCard heading test (#3282)
+- fix: adjust duration position and remove institution label from the video series page and change the title of video and playlist on drawer (#3270)
+- qdrant: Automatically compute optimizer settings (#3273)
+
 Version 0.65.6 (Released May 04, 2026)
 --------------
 
diff --git a/frontends/api/src/hooks/learningResources/index.ts b/frontends/api/src/hooks/learningResources/index.ts
index fe697779a8..989c023895 100644
--- a/frontends/api/src/hooks/learningResources/index.ts
+++ b/frontends/api/src/hooks/learningResources/index.ts
@@ -193,16 +193,6 @@ const useSimilarLearningResources = (
   })
 }
 
-const useVectorSimilarLearningResources = (
-  id: number,
-  opts?: { enabled?: boolean },
-) => {
-  return useQuery({
-    ...learningResourceQueries.vectorSimilar(id),
-    ...opts,
-  })
-}
-
 const useInfiniteLearningResourceItems = (
   id: number,
   params: Omit<ItemsListRequest, "offset">,
@@ -229,7 +219,6 @@ export {
   usePlatformsList,
   useSchoolsList,
   useSimilarLearningResources,
-  useVectorSimilarLearningResources,
   useInfiniteLearningResourceItems,
   learningResourceQueries,
   offerorQueries,
diff --git a/frontends/api/src/hooks/learningResources/queries.ts b/frontends/api/src/hooks/learningResources/queries.ts
index d6e38395d2..505da571ea 100644
--- a/frontends/api/src/hooks/learningResources/queries.ts
+++ b/frontends/api/src/hooks/learningResources/queries.ts
@@ -22,6 +22,7 @@ import type {
   LearningResourcesApiLearningResourcesSummaryListRequest as LearningResourcesSummaryListRequest,
   PaginatedLearningResourceRelationshipList,
   VideoPlaylistResource,
+  LearningResourcesApiLearningResourcesVectorSimilarListRequest,
 } from "../../generated/v1"
 import type { VectorLearningResourcesSearchApiVectorLearningResourcesSearchRetrieveRequest as VectorLearningResourcesSearchRetrieveRequest } from "../../generated/v0"
 import { infiniteQueryOptions, queryOptions } from "@tanstack/react-query"
@@ -54,10 +55,9 @@ const learningResourceKeys = {
   detailsRoot: () => [...learningResourceKeys.root, "detail"],
   detail: (id: number) => [...learningResourceKeys.detailsRoot(), id],
   similar: (id: number) => [...learningResourceKeys.detail(id), "similar"],
-  vectorSimilar: (id: number) => [
-    ...learningResourceKeys.detail(id),
-    "vector_similar",
-  ],
+  vectorSimilar: (
+    params: LearningResourcesApiLearningResourcesVectorSimilarListRequest,
+  ) => [...learningResourceKeys.detail(params.id), "vector_similar", params],
   itemsRoot: (id: number) => [...learningResourceKeys.detail(id), "items"],
   items: (id: number, params: ItemsListRequest) => [
     ...learningResourceKeys.itemsRoot(id),
@@ -174,12 +174,14 @@ const learningResourceQueries = {
           .learningResourcesSimilarList({ id })
           .then((res) => res.data),
     }),
-  vectorSimilar: (id: number) =>
+  vectorSimilar: (
+    params: LearningResourcesApiLearningResourcesVectorSimilarListRequest,
+  ) =>
     queryOptions({
-      queryKey: learningResourceKeys.vectorSimilar(id),
+      queryKey: learningResourceKeys.vectorSimilar(params),
       queryFn: () =>
         learningResourcesApi
-          .learningResourcesVectorSimilarList({ id })
+          .learningResourcesVectorSimilarList(params)
           .then((res) => res.data),
     }),
   list: (params: LearningResourcesListRequest) =>
diff --git a/frontends/main/next.config.js b/frontends/main/next.config.js
index 1f0b85bb55..e3dc571210 100644
--- a/frontends/main/next.config.js
+++ b/frontends/main/next.config.js
@@ -8,6 +8,10 @@ const NEXT_PUBLIC_OPTIMIZE_IMAGES = Boolean(
 )
 const IS_LOCAL_DEV = process.env.NODE_ENV === "development"
 
+const NEXT_CACHE_S_MAXAGE_SECONDS =
+  process.env.NEXT_CACHE_S_MAXAGE_SECONDS || "1800"
+const PAGE_CACHE_CONTROL = `s-maxage=${NEXT_CACHE_S_MAXAGE_SECONDS}, stale-if-error=86400, stale-while-revalidate=86400`
+
 const processFeatureFlags = () => {
   const featureFlagPrefix =
     process.env.NEXT_PUBLIC_POSTHOG_FEATURE_PREFIX || "FEATURE_"
@@ -69,8 +73,7 @@ const nextConfig = {
         headers: [
           {
             key: "Cache-Control",
-            value:
-              "s-maxage=1800, stale-if-error=86400, stale-while-revalidate=86400",
+            value: PAGE_CACHE_CONTROL,
           },
         ],
       },
@@ -86,8 +89,7 @@ const nextConfig = {
         headers: [
           {
             key: "Cache-Control",
-            value:
-              "s-maxage=1800, stale-if-error=86400, stale-while-revalidate=86400",
+            value: PAGE_CACHE_CONTROL,
           },
         ],
       },
diff --git a/frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/DashboardCard.test.tsx b/frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/DashboardCard.test.tsx
index 33580a0ac3..cae4957486 100644
--- a/frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/DashboardCard.test.tsx
+++ b/frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/DashboardCard.test.tsx
@@ -126,7 +126,7 @@ describe.each([
     })
     expect(courseLink).toHaveAttribute("href", coursewareUrl)
     expect(
-      within(card).getByRole("heading", { name: course.title, level: 3 }),
+      within(card).getByRole("heading", { name: courseRun.title, level: 3 }),
     ).toBeInTheDocument()
   })
 
diff --git a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/MetaRow.tsx b/frontends/main/src/app-pages/VideoPlaylistCollectionPage/MetaRow.tsx
deleted file mode 100644
index 46efa2dfb1..0000000000
--- a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/MetaRow.tsx
+++ /dev/null
@@ -1,45 +0,0 @@
-import React from "react"
-import { theme, useMediaQuery } from "ol-components"
-import * as Styled from "./VideoSeriesDetailPage.styled"
-
-type MetaRowProps = {
-  metaParts: string[]
-  instructorNames: string | null
-  departmentName: string | null
-  duration: string | null
-  term: string | null
-}
-
-const MetaRow: React.FC<MetaRowProps> = ({
-  metaParts,
-  instructorNames,
-  departmentName,
-  duration,
-  term,
-}) => {
-  const isMobile = useMediaQuery(theme.breakpoints.down("sm"))
-
-  if (isMobile) {
-    if (!instructorNames && !departmentName && !duration && !term) return null
-    return (
-      <Styled.MetaRow>
-        {instructorNames && (
-          <Styled.MetaInstructorLine>
-            {instructorNames}
-          </Styled.MetaInstructorLine>
-        )}
-        {departmentName && <div>{departmentName}</div>}
-        {(duration || term) && (
-          <Styled.StyledDuration>
-            {[duration, term].filter(Boolean).join(" · ")}
-          </Styled.StyledDuration>
-        )}
-      </Styled.MetaRow>
-    )
-  }
-
-  if (metaParts.length === 0) return null
-  return <Styled.MetaRow>{metaParts.join(" · ")}</Styled.MetaRow>
-}
-
-export default MetaRow
diff --git a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/TopicChips.tsx b/frontends/main/src/app-pages/VideoPlaylistCollectionPage/TopicChips.tsx
deleted file mode 100644
index 93f3dcb890..0000000000
--- a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/TopicChips.tsx
+++ /dev/null
@@ -1,32 +0,0 @@
-import React from "react"
-import type { LearningResourceTopic } from "api/v1"
-import * as Styled from "./VideoSeriesDetailPage.styled"
-
-type TopicChipsProps = {
-  topics: LearningResourceTopic[]
-}
-
-const TopicChips: React.FC<TopicChipsProps> = ({ topics }) => {
-  if (topics.length === 0) return null
-
-  return (
-    <>
-      <Styled.SectionDivider />
-      <Styled.VideoSeriesSectionHeading>
-        Video Series
-      </Styled.VideoSeriesSectionHeading>
-      <Styled.TopicChipsRow>
-        {topics.map((topic) => (
-          <Styled.TopicChip
-            key={topic.id}
-            href={`/search?topic=${encodeURIComponent(topic.name ?? "")}`}
-          >
-            {topic.name}
-          </Styled.TopicChip>
-        ))}
-      </Styled.TopicChipsRow>
-    </>
-  )
-}
-
-export default TopicChips
diff --git a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoCollection.tsx b/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoCollection.tsx
index b1a768ab98..db8c558a73 100644
--- a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoCollection.tsx
+++ b/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoCollection.tsx
@@ -1,5 +1,5 @@
 import React from "react"
-import { Typography, styled, theme } from "ol-components"
+import { styled } from "ol-components"
 import VideoContainer from "./VideoContainer"
 import type { VideoResource } from "api/v1"
 import { VideoCard, VideoCardSkeleton } from "./VideoCard"
@@ -18,22 +18,6 @@ const StyledContainer = styled(VideoContainer)(({ theme }) => ({
   borderTop: `1px solid ${theme.custom.colors.lightGray2}`,
 }))
 
-const CollectionHeader = styled.div(({ theme }) => ({
-  display: "flex",
-  justifyContent: "space-between",
-  alignItems: "center",
-  margin: "32px 0 8px 0",
-  [theme.breakpoints.down("sm")]: {
-    margin: "24px 0 0 0",
-  },
-}))
-
-const CollectionTitle = styled(Typography)({
-  ...theme.typography.body1,
-  fontWeight: theme.typography.fontWeightMedium,
-  color: theme.custom.colors.black,
-})
-
 const VideoCardList = styled.div(({ theme }) => ({
   display: "flex",
   flexDirection: "column",
@@ -61,10 +45,6 @@ const VideoCollection: React.FC<VideoCollectionProps> = ({
   return (
     <CollectionSection>
       <StyledContainer>
-        <CollectionHeader>
-          <CollectionTitle>{videos.length} Videos</CollectionTitle>
-        </CollectionHeader>
-
         <VideoCardList>
           {isLoading
             ? Array.from({ length: 4 }).map((_, i) => (
diff --git a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoPlaylistCollectionPage.tsx b/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoPlaylistCollectionPage.tsx
index 7855166de1..7329da8744 100644
--- a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoPlaylistCollectionPage.tsx
+++ b/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoPlaylistCollectionPage.tsx
@@ -69,11 +69,11 @@ const VideoPlaylistCollectionPage: React.FC<
   )
 
   const { data: similarData, isLoading: similarLoading } = useQuery({
-    ...learningResourceQueries.vectorSimilar(playlistId),
-    select: (data) =>
-      data.filter(
-        (resource) => resource.resource_type === ResourceTypeEnum.VideoPlaylist,
-      ),
+    ...learningResourceQueries.vectorSimilar({
+      id: playlistId,
+      limit: 6,
+      resource_type: [ResourceTypeEnum.VideoPlaylist],
+    }),
   })
 
   if (!showVideoPlaylistPage) {
@@ -88,7 +88,6 @@ const VideoPlaylistCollectionPage: React.FC<
     (item): item is VideoResource =>
       item.resource_type === VideoResourceResourceTypeEnum.Video,
   )
-  const collectionVideos = videos.slice(1)
   const playlistType = isOcwPlaylist(playlist)
 
   const totalVideos = videos.length
@@ -128,7 +127,7 @@ const VideoPlaylistCollectionPage: React.FC<
       ) : null}
       {!playlistType && (
         <VideoCollection
-          videos={collectionVideos}
+          videos={videos.slice(1)} // 0th video is featured prominently
           isLoading={isLoading}
           getHref={getVideoHref}
         />
diff --git a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoSeriesDetailPage.styled.ts b/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoSeriesDetailPage.styled.ts
index 7cd30b54d9..459551f4aa 100644
--- a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoSeriesDetailPage.styled.ts
+++ b/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoSeriesDetailPage.styled.ts
@@ -165,7 +165,7 @@ export const VideoTitle = styled.h1(({ theme }) => ({
   ...theme.typography.h2,
   fontWeight: theme.typography.fontWeightBold,
   color: theme.custom.colors.black,
-  margin: "0 0 40px",
+  margin: "0 0 16px",
   "&:focus": { outline: "none" },
   fontSize: "44px",
   fontStyle: "normal",
@@ -173,7 +173,7 @@ export const VideoTitle = styled.h1(({ theme }) => ({
   letterSpacing: "-0.88px",
   [theme.breakpoints.down("sm")]: {
     ...theme.typography.h3,
-    margin: "0 0 14px",
+    margin: "0 0 8px",
     letterSpacing: "inherit",
   },
 }))
@@ -297,8 +297,9 @@ export const MetaInstructorLine = styled.div(({ theme }) => ({
 export const StyledDuration = styled.div(({ theme }) => ({
   ...theme.typography.body2,
   color: theme.custom.colors.silverGrayDark,
+  margin: "0 0 40px",
   [theme.breakpoints.down("sm")]: {
-    marginTop: "4px",
+    margin: "0 0 16px",
   },
 }))
 
diff --git a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoSeriesDetailPage.test.tsx b/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoSeriesDetailPage.test.tsx
index 766bd1afaa..031c630b67 100644
--- a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoSeriesDetailPage.test.tsx
+++ b/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoSeriesDetailPage.test.tsx
@@ -134,34 +134,6 @@ describe("VideoSeriesDetailPage", () => {
         name: "Introduction to Machine Learning",
       })
     })
-
-    test("renders the institution label from the video department", async () => {
-      const video = makeVideo({
-        departments: [
-          factories.learningResources.department({
-            department_id: "eecs",
-            name: "Electrical Engineering and Computer Science",
-          }),
-        ],
-      })
-      renderPage({ video })
-
-      await screen.findByText("ELECTRICAL ENGINEERING AND COMPUTER SCIENCE")
-    })
-
-    test("renders the institution label from offered_by when no department", async () => {
-      const playlist = makePlaylist({
-        offered_by: {
-          code: "ocw",
-          name: "MIT OpenCourseWare",
-          channel_url: null,
-        },
-      })
-      const video = makeVideo({ departments: [] })
-      renderPage({ video, playlistId: playlist.id, playlistData: playlist })
-
-      await screen.findByText("MIT OPENCOURSEWARE")
-    })
   })
 
   describe("breadcrumbs", () => {
@@ -391,42 +363,6 @@ describe("VideoSeriesDetailPage", () => {
     })
   })
 
-  describe("topic chips", () => {
-    test("renders topic chip links for each topic", async () => {
-      const video = makeVideo({
-        topics: [
-          { id: 1, name: "Machine Learning", parent: 10, channel_url: null },
-          { id: 2, name: "Statistics", parent: 11, channel_url: null },
-        ],
-      })
-      renderPage({ video })
-
-      const mlChip = await screen.findByRole("link", {
-        name: "Machine Learning",
-      })
-      const statsChip = screen.getByRole("link", { name: "Statistics" })
-      expect(mlChip).toHaveAttribute("href", "/search?topic=Machine%20Learning")
-      expect(statsChip).toHaveAttribute("href", "/search?topic=Statistics")
-    })
-
-    test("renders the Video Series heading when topics are present", async () => {
-      const video = makeVideo({
-        topics: [{ id: 1, name: "Robotics", parent: 5, channel_url: null }],
-      })
-      renderPage({ video })
-
-      await screen.findByText("Video Series")
-    })
-
-    test("does not render the Video Series section when there are no topics", async () => {
-      const video = makeVideo({ topics: [] })
-      renderPage({ video })
-
-      await screen.findByRole("heading", { name: video.title })
-      expect(screen.queryByText("Video Series")).not.toBeInTheDocument()
-    })
-  })
-
   describe("video player", () => {
     test("renders the video player when a streaming URL is present", async () => {
       const video = makeVideo({
diff --git a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoSeriesDetailPage.tsx b/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoSeriesDetailPage.tsx
index a38787342a..306d09224d 100644
--- a/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoSeriesDetailPage.tsx
+++ b/frontends/main/src/app-pages/VideoPlaylistCollectionPage/VideoSeriesDetailPage.tsx
@@ -17,8 +17,6 @@ import { notFound } from "next/navigation"
 import { useSeriesNavigation } from "./useSeriesNavigation"
 import SeriesNavBar from "./SeriesNavBar"
 import UpNextSection from "./UpNextSection"
-import MetaRow from "./MetaRow"
-import TopicChips from "./TopicChips"
 import * as Styled from "./VideoSeriesDetailPage.styled"
 
 const VideoJsPlayer = dynamic<VideoJsPlayerProps>(
@@ -78,40 +76,14 @@ const VideoSeriesDetailPage: React.FC<VideoSeriesDetailPageProps> = ({
     ? formatDurationClockTime(video.video.duration)
     : null
 
-  const topics = video?.topics ?? []
   const playlistLabel = playlist?.title || "Video Collection"
 
-  // Meta: instructors, department, duration, term
-  const run = video?.runs?.[0]
-  const instructorNames =
-    run?.instructors
-      ?.map((i) => i.full_name)
-      .filter(Boolean)
-      .join(", ") ?? null
-  const departmentName = video?.departments?.[0]?.name ?? null
-  const term =
-    run?.semester && run?.year
-      ? `${run.semester} ${run.year}`
-      : run?.semester || (run?.year ? String(run.year) : null)
-  const metaParts = [instructorNames, departmentName, duration, term].filter(
-    Boolean,
-  ) as string[]
-
-  const institutionLabel =
-    video?.departments?.[0]?.name?.toUpperCase() ??
-    playlist?.offered_by?.name?.toUpperCase() ??
-    null
-
   const isLoading = videoLoading || (!!playlistId && playlistLoading)
 
   const videoTitleLabel = video?.title?.trim() || "Untitled video"
   const durationLabel = duration || "Unknown duration"
-  const topicNamesLabel =
-    topics
-      .map((t) => t.name)
-      .filter(Boolean)
-      .join(" · ") || "No topics listed"
-  const videoThumbnailAlt = `Video thumbnail for ${videoTitleLabel}. Duration: ${durationLabel}. Topics: ${topicNamesLabel}`
+
+  const videoThumbnailAlt = `Video thumbnail for ${videoTitleLabel}. Duration: ${durationLabel}`
   const loadingStatusMessage = isLoading
     ? "Loading video details and player"
     : "Video details loaded"
@@ -184,15 +156,6 @@ const VideoSeriesDetailPage: React.FC<VideoSeriesDetailPageProps> = ({
 
       <Styled.ContentArea id="video-detail-main" tabIndex={-1}>
         <VideoContainer>
-          {/* Institution / category label */}
-          {isLoading ? (
-            <Skeleton width={280} height={16} style={{ marginBottom: 8 }} />
-          ) : institutionLabel ? (
-            <Styled.InstitutionLabel>
-              {institutionLabel}
-            </Styled.InstitutionLabel>
-          ) : null}
-
           {/* Video title */}
           {isLoading ? (
             <Skeleton
@@ -206,7 +169,9 @@ const VideoSeriesDetailPage: React.FC<VideoSeriesDetailPageProps> = ({
               {video?.title}
             </Styled.VideoTitle>
           )}
-
+          {duration && (
+            <Styled.StyledDuration>{duration}</Styled.StyledDuration>
+          )}
           {/* Video player */}
           <Styled.PlayerWrapper
             id="video-player-region"
@@ -267,17 +232,6 @@ const VideoSeriesDetailPage: React.FC<VideoSeriesDetailPageProps> = ({
             <UpNextSection nextVideo={nextVideo} getVideoHref={getVideoHref} />
           )}
 
-          {/* Meta row */}
-          {!isLoading && (
-            <MetaRow
-              metaParts={metaParts}
-              instructorNames={instructorNames}
-              departmentName={departmentName}
-              duration={duration}
-              term={term}
-            />
-          )}
-
           {/* Description */}
           {!isLoading && video?.description && (
             <Styled.DescriptionText
@@ -288,13 +242,9 @@ const VideoSeriesDetailPage: React.FC<VideoSeriesDetailPageProps> = ({
 
           {!isLoading && !video?.description && (
             <Styled.ScreenReaderOnly id="video-description">
-              {videoTitleLabel}. Duration: {durationLabel}. Topics:{" "}
-              {topicNamesLabel}.
+              {videoTitleLabel}. Duration: {durationLabel}.
             </Styled.ScreenReaderOnly>
           )}
-
-          {/* Topic chips */}
-          {!isLoading && <TopicChips topics={topics} />}
         </VideoContainer>
       </Styled.ContentArea>
     </Styled.PageWrapper>
diff --git a/frontends/main/src/page-components/LearningResourceExpanded/CallToActionSection.test.tsx b/frontends/main/src/page-components/LearningResourceExpanded/CallToActionSection.test.tsx
index 350af37be6..cceeea53e2 100644
--- a/frontends/main/src/page-components/LearningResourceExpanded/CallToActionSection.test.tsx
+++ b/frontends/main/src/page-components/LearningResourceExpanded/CallToActionSection.test.tsx
@@ -54,7 +54,7 @@ describe("CallToActionSection", () => {
         resourceType: ResourceTypeEnum.Video,
         platform: PlatformEnum.Youtube,
         resourceCategory: "Lecture Video",
-        expectedText: "Watch Video",
+        expectedText: "Learn More",
       },
       {
         resourceType: ResourceTypeEnum.Video,
@@ -66,7 +66,7 @@ describe("CallToActionSection", () => {
         resourceType: ResourceTypeEnum.VideoPlaylist,
         platform: PlatformEnum.Youtube,
         resourceCategory: "Video Playlist",
-        expectedText: "Watch Video",
+        expectedText: "Learn More",
       },
       {
         resourceType: ResourceTypeEnum.Podcast,
diff --git a/frontends/main/src/page-components/LearningResourceExpanded/CallToActionSection.tsx b/frontends/main/src/page-components/LearningResourceExpanded/CallToActionSection.tsx
index e931fe7a11..1cdf7e6290 100644
--- a/frontends/main/src/page-components/LearningResourceExpanded/CallToActionSection.tsx
+++ b/frontends/main/src/page-components/LearningResourceExpanded/CallToActionSection.tsx
@@ -257,13 +257,12 @@ const getCallToActionText = (resource: LearningResource): string => {
   const listenToPodcast = "Listen to Podcast"
   const viewArticle = "View Article"
   const learnMore = "Learn More"
-  const watchVideos = "Watch Video"
   const callsToAction = {
     [ResourceTypeEnum.Course]: learnMore,
     [ResourceTypeEnum.Program]: learnMore,
     [ResourceTypeEnum.LearningPath]: learnMore,
-    [ResourceTypeEnum.Video]: watchVideos,
-    [ResourceTypeEnum.VideoPlaylist]: watchVideos,
+    [ResourceTypeEnum.Video]: learnMore,
+    [ResourceTypeEnum.VideoPlaylist]: learnMore,
     [ResourceTypeEnum.Podcast]: listenToPodcast,
     [ResourceTypeEnum.PodcastEpisode]: listenToPodcast,
     [ResourceTypeEnum.Document]: learnMore,
diff --git a/frontends/main/src/page-components/ResourceCarousel/ResourceCarousel.tsx b/frontends/main/src/page-components/ResourceCarousel/ResourceCarousel.tsx
index 22e7d2c075..3d08a8ee58 100644
--- a/frontends/main/src/page-components/ResourceCarousel/ResourceCarousel.tsx
+++ b/frontends/main/src/page-components/ResourceCarousel/ResourceCarousel.tsx
@@ -200,9 +200,9 @@ const getTabQuery = (tab: TabConfig): CarouselQuery => {
         tab.data.params.id,
       ) as CarouselQuery
     case "lr_vector_similar":
-      return learningResourceQueries.vectorSimilar(
-        tab.data.params.id,
-      ) as CarouselQuery
+      return learningResourceQueries.vectorSimilar({
+        id: tab.data.params.id,
+      }) as CarouselQuery
   }
 }
 
diff --git a/frontends/main/validateEnv.js b/frontends/main/validateEnv.js
index e84d8fb45b..478e6da9ac 100644
--- a/frontends/main/validateEnv.js
+++ b/frontends/main/validateEnv.js
@@ -10,6 +10,9 @@ const yup = require("yup")
 const schema = yup.object().shape({
   // Server-only env vars
   MITOL_NOINDEX: yup.string().oneOf(["true", "false"]),
+  NEXT_CACHE_S_MAXAGE_SECONDS: yup
+    .string()
+    .matches(/^\d+$/, { excludeEmptyString: true }),
   // Client or Server env vars
   NEXT_PUBLIC_APPZI_URL: yup.string(),
   NEXT_PUBLIC_ORIGIN: yup.string().required(),
diff --git a/main/settings.py b/main/settings.py
index 00ec603259..0236a4dd68 100644
--- a/main/settings.py
+++ b/main/settings.py
@@ -35,7 +35,7 @@
 from main.settings_pluggy import *  # noqa: F403
 from openapi.settings_spectacular import open_spectacular_settings
 
-VERSION = "0.65.6"
+VERSION = "0.66.0"
 
 log = logging.getLogger()
 
diff --git a/vector_search/conftest.py b/vector_search/conftest.py
index ef62997ffd..be3651cf1f 100644
--- a/vector_search/conftest.py
+++ b/vector_search/conftest.py
@@ -40,6 +40,13 @@ def _use_test_qdrant_settings(settings, mocker):
     )
     mock_qdrant = mocker.patch("qdrant_client.QdrantClient")
     mocker.patch("vector_search.utils.SemanticChunker")
+    mocker.patch(
+        "vector_search.utils.compute_optimizer_settings",
+        return_value={
+            "indexing_threshold": 10,
+            "flush_interval_sec": 5,
+        },
+    )
 
     mock_qdrant.scroll.return_value = [
         [],
diff --git a/vector_search/constants.py b/vector_search/constants.py
index bf2deb09de..e740589373 100644
--- a/vector_search/constants.py
+++ b/vector_search/constants.py
@@ -142,3 +142,24 @@
 
 # Maximum value of offset + limit accepted by paginated vector search
 MAX_RESULT_WINDOW = 1000
+
+# Qdrant Optimizer Settings
+# Thresholds for points per shard
+QDRANT_OPTIMIZER_THRESHOLD_SMALL = 50_000
+QDRANT_OPTIMIZER_THRESHOLD_MEDIUM = 500_000
+QDRANT_OPTIMIZER_THRESHOLD_LARGE = 2_000_000
+
+# Target segment sizes
+QDRANT_OPTIMIZER_SEGMENT_SMALL = 20_000
+QDRANT_OPTIMIZER_SEGMENT_MEDIUM = 60_000
+QDRANT_OPTIMIZER_SEGMENT_LARGE = 120_000
+QDRANT_OPTIMIZER_SEGMENT_XLARGE = 250_000
+
+# Flush intervals
+QDRANT_OPTIMIZER_FLUSH_INTERVAL_SMALL = 15
+QDRANT_OPTIMIZER_FLUSH_INTERVAL_MEDIUM = 20
+QDRANT_OPTIMIZER_FLUSH_INTERVAL_LARGE = 25
+QDRANT_OPTIMIZER_FLUSH_INTERVAL_XLARGE = 30
+
+# Indexing threshold ratio
+QDRANT_OPTIMIZER_INDEXING_THRESHOLD_RATIO = 0.4
diff --git a/vector_search/utils.py b/vector_search/utils.py
index 89791ab06e..c235595a04 100644
--- a/vector_search/utils.py
+++ b/vector_search/utils.py
@@ -38,6 +38,18 @@
     QDRANT_CONTENT_FILE_INDEXES,
     QDRANT_CONTENT_FILE_PARAM_MAP,
     QDRANT_LEARNING_RESOURCE_INDEXES,
+    QDRANT_OPTIMIZER_FLUSH_INTERVAL_LARGE,
+    QDRANT_OPTIMIZER_FLUSH_INTERVAL_MEDIUM,
+    QDRANT_OPTIMIZER_FLUSH_INTERVAL_SMALL,
+    QDRANT_OPTIMIZER_FLUSH_INTERVAL_XLARGE,
+    QDRANT_OPTIMIZER_INDEXING_THRESHOLD_RATIO,
+    QDRANT_OPTIMIZER_SEGMENT_LARGE,
+    QDRANT_OPTIMIZER_SEGMENT_MEDIUM,
+    QDRANT_OPTIMIZER_SEGMENT_SMALL,
+    QDRANT_OPTIMIZER_SEGMENT_XLARGE,
+    QDRANT_OPTIMIZER_THRESHOLD_LARGE,
+    QDRANT_OPTIMIZER_THRESHOLD_MEDIUM,
+    QDRANT_OPTIMIZER_THRESHOLD_SMALL,
     QDRANT_RESOURCE_PARAM_MAP,
     QDRANT_TOPIC_INDEXES,
     RESOURCES_COLLECTION_NAME,
@@ -127,6 +139,48 @@ def points_generator(
         yield models.PointStruct(**point_data)
 
 
+def compute_optimizer_settings(point_count: int, shard_number: int):
+    points_per_shard = max(point_count // shard_number, 1)
+
+    # Determine target segment size
+    if points_per_shard < QDRANT_OPTIMIZER_THRESHOLD_SMALL:
+        target_segment = QDRANT_OPTIMIZER_SEGMENT_SMALL
+        flush_interval = QDRANT_OPTIMIZER_FLUSH_INTERVAL_SMALL
+    elif points_per_shard < QDRANT_OPTIMIZER_THRESHOLD_MEDIUM:
+        target_segment = QDRANT_OPTIMIZER_SEGMENT_MEDIUM
+        flush_interval = QDRANT_OPTIMIZER_FLUSH_INTERVAL_MEDIUM
+    elif points_per_shard < QDRANT_OPTIMIZER_THRESHOLD_LARGE:
+        target_segment = QDRANT_OPTIMIZER_SEGMENT_LARGE
+        flush_interval = QDRANT_OPTIMIZER_FLUSH_INTERVAL_LARGE
+    else:
+        target_segment = QDRANT_OPTIMIZER_SEGMENT_XLARGE
+        flush_interval = QDRANT_OPTIMIZER_FLUSH_INTERVAL_XLARGE
+
+    indexing_threshold = int(target_segment * QDRANT_OPTIMIZER_INDEXING_THRESHOLD_RATIO)
+
+    return {
+        "indexing_threshold": indexing_threshold,
+        "flush_interval_sec": flush_interval,
+    }
+
+
+def tune_collection(client, collection_name):
+    info = client.get_collection(collection_name)
+    point_count = info.points_count
+    shard_number = info.config.params.shard_number
+    desired = compute_optimizer_settings(point_count, shard_number)
+    current = info.config.optimizer_config
+    if (
+        current.indexing_threshold == desired["indexing_threshold"]
+        and current.flush_interval_sec == desired["flush_interval_sec"]
+    ):
+        return
+    client.update_collection(
+        collection_name=collection_name,
+        optimizer_config=models.OptimizersConfigDiff(**desired),
+    )
+
+
 def create_qdrant_collections(force_recreate):
     """
     Create or recreate QDrant collections
@@ -187,6 +241,7 @@ def create_qdrant_collection(collection_name, force_recreate):
             ),
             hnsw_config=models.HnswConfigDiff(on_disk=False),
         )
+    tune_collection(client, collection_name)
 
 
 def update_qdrant_indexes():
diff --git a/vector_search/utils_test.py b/vector_search/utils_test.py
index c9d2458a44..e2303e8851 100644
--- a/vector_search/utils_test.py
+++ b/vector_search/utils_test.py
@@ -33,6 +33,18 @@
     QDRANT_CONTENT_FILE_INDEXES,
     QDRANT_CONTENT_FILE_PARAM_MAP,
     QDRANT_LEARNING_RESOURCE_INDEXES,
+    QDRANT_OPTIMIZER_FLUSH_INTERVAL_LARGE,
+    QDRANT_OPTIMIZER_FLUSH_INTERVAL_MEDIUM,
+    QDRANT_OPTIMIZER_FLUSH_INTERVAL_SMALL,
+    QDRANT_OPTIMIZER_FLUSH_INTERVAL_XLARGE,
+    QDRANT_OPTIMIZER_INDEXING_THRESHOLD_RATIO,
+    QDRANT_OPTIMIZER_SEGMENT_LARGE,
+    QDRANT_OPTIMIZER_SEGMENT_MEDIUM,
+    QDRANT_OPTIMIZER_SEGMENT_SMALL,
+    QDRANT_OPTIMIZER_SEGMENT_XLARGE,
+    QDRANT_OPTIMIZER_THRESHOLD_LARGE,
+    QDRANT_OPTIMIZER_THRESHOLD_MEDIUM,
+    QDRANT_OPTIMIZER_THRESHOLD_SMALL,
     QDRANT_RESOURCE_PARAM_MAP,
     RESOURCES_COLLECTION_NAME,
 )
@@ -46,6 +58,7 @@
     _is_markdown_content,
     _resource_vector_hits,
     async_qdrant_aggregations,
+    compute_optimizer_settings,
     create_qdrant_collections,
     embed_learning_resources,
     embed_topics,
@@ -63,6 +76,65 @@
 pytestmark = pytest.mark.django_db
 
 
+@pytest.mark.parametrize(
+    ("point_count", "shard_number", "segment_size", "flush_interval"),
+    [
+        (
+            0,
+            10,
+            QDRANT_OPTIMIZER_SEGMENT_SMALL,
+            QDRANT_OPTIMIZER_FLUSH_INTERVAL_SMALL,
+        ),
+        (
+            QDRANT_OPTIMIZER_THRESHOLD_SMALL - 1,
+            1,
+            QDRANT_OPTIMIZER_SEGMENT_SMALL,
+            QDRANT_OPTIMIZER_FLUSH_INTERVAL_SMALL,
+        ),
+        (
+            QDRANT_OPTIMIZER_THRESHOLD_SMALL,
+            1,
+            QDRANT_OPTIMIZER_SEGMENT_MEDIUM,
+            QDRANT_OPTIMIZER_FLUSH_INTERVAL_MEDIUM,
+        ),
+        (
+            QDRANT_OPTIMIZER_THRESHOLD_MEDIUM,
+            2,
+            QDRANT_OPTIMIZER_SEGMENT_MEDIUM,
+            QDRANT_OPTIMIZER_FLUSH_INTERVAL_MEDIUM,
+        ),
+        (
+            QDRANT_OPTIMIZER_THRESHOLD_MEDIUM,
+            1,
+            QDRANT_OPTIMIZER_SEGMENT_LARGE,
+            QDRANT_OPTIMIZER_FLUSH_INTERVAL_LARGE,
+        ),
+        (
+            QDRANT_OPTIMIZER_THRESHOLD_LARGE,
+            4,
+            QDRANT_OPTIMIZER_SEGMENT_LARGE,
+            QDRANT_OPTIMIZER_FLUSH_INTERVAL_LARGE,
+        ),
+        (
+            QDRANT_OPTIMIZER_THRESHOLD_LARGE,
+            1,
+            QDRANT_OPTIMIZER_SEGMENT_XLARGE,
+            QDRANT_OPTIMIZER_FLUSH_INTERVAL_XLARGE,
+        ),
+    ],
+)
+def test_compute_optimizer_settings(
+    point_count, shard_number, segment_size, flush_interval
+):
+    """Optimizer settings are determined by point count per shard."""
+    assert compute_optimizer_settings(point_count, shard_number) == {
+        "indexing_threshold": int(
+            segment_size * QDRANT_OPTIMIZER_INDEXING_THRESHOLD_RATIO
+        ),
+        "flush_interval_sec": flush_interval,
+    }
+
+
 @pytest.mark.parametrize("content_type", ["course", "content_file"])
 def test_vector_point_id_used_for_embed(mocker, content_type):
     # test the vector ids we generate for embedding resources and files