VRChat no longer utilizes more than 16GB of VRAM even if more is available
Hunt
In Worlds with many users, especially those with un-optimized avatars, VRChat no longer will use more than 16GB of VRAM even if more is available on your GPU and game performance would benefit from using more.
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Hunt
Just to provide a bit more detail. I noticed this change sometime back around March of last year.
I've got the Nvidia 3090 and it used to use all the VRAM available in busy worlds, but now no longer does. My friend with a Nvidia 5090 has the same issue.