diff --git a/.github/workflows/python-perf.yml b/.github/workflows/python-perf.yml
index c5a4ab41..8b4bed00 100644
--- a/.github/workflows/python-perf.yml
+++ b/.github/workflows/python-perf.yml
@@ -52,7 +52,7 @@ jobs:
         env:
           CI_S3_BUCKET: ${{ vars.CI_S3_BUCKET }}
           CI_KMS_KEY_ALIAS: ${{ vars.CI_KMS_KEY_ALIAS }}
-          PERF_NUM_ROUNDS: "30"
+          PERF_NUM_ROUNDS: "10"
 
       - name: Generate performance HTML report
         if: always()
diff --git a/test/performance/conftest.py b/test/performance/conftest.py
index 2e686a30..aaf9c934 100644
--- a/test/performance/conftest.py
+++ b/test/performance/conftest.py
@@ -17,8 +17,8 @@
 )
 
 # Performance test configuration
-NUM_ROUNDS = int(os.environ.get("PERF_NUM_ROUNDS", "30"))
-OBJECT_SIZES_MB = [10, 25, 50]
+NUM_ROUNDS = int(os.environ.get("PERF_NUM_ROUNDS", "10"))
+OBJECT_SIZES_MB = [10, 50]
 
 
 def _make_s3ec(algorithm_suite, commitment_policy):