Rendered images are blurry even with high resolutions

[MikeX7]

I am using blender 4.4.3
Render engine: eevee
Stereoscopy: on, tried both SBS and top-bottom
Latest version of eeVR downloaded here from github.
Output format: png

eeVR settings:

The left image was rendered at 1920x1080 (per eye)
The right image was rendered at 7680x4320 (per eye)

Same exact camera position in both.

(just for clarity those triangles are 3d objects, not just textures, and that is not the entire rendered image, i cut out a piece of where this issue is easily visible)

But despite the resolution being set to several times higher than the left image, it still looks very blurry and jagged.
It seems like even increasing the resolution drastically has very little effect on the final image quality.

If I render the image in just regular stereoscopy (without eeVR, or in cycles instead, it's sharp)