Hello @makulski, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/8255#issuecomment-4187510640.
proton experimentalx1 2026-04PROTON_DISABLE_NVAPI=1x1 2026-04PROTON_HIDE_NVIDIA_GPU=1x1 2026-04PROTON_DISABLE_NVAPI=1 PROTON_HIDE_NVIDIA_GPU=1 %command%x1 2026-04PROTON_DISABLE_NVAPI=1 PROTON_HIDE_NVIDIA_GPU=1 %command% -FastLaunchx1 2026-04
Compatibility Report
System Information
I confirm:
PROTON log is 130 mb in size and I have problems uploading it with suggested method.
Symptoms:
The game works flawless in flatscreen now using Proton Experimental Bleeding Edge - but it crashes immediately after switching to VR (tried all available proton versions).
However, when disabling Nvidia features:
PROTON_DISABLE_NVAPI=1 PROTON_HIDE_NVIDIA_GPU=1 %command% -FastLaunch (-FastLaunch skips movies)
the game works once again flawless and in VR, but is devout of Nvidia DLSS.
Reproduction