When the HMD is set to use High resolution within Pimax Play, running under steam VR, the game will eventually, and most often during loading screens shows graphical artifacts (distortions, blurring etc) and given enough time fail to run entirely, forcing me to crash out.
However if I change the resolution on the HMD in Pimax Play to 'Medium' it does run successfully, with no additional changes to the game itself.
I've tried running the game in 'windowed' mode and 'full screen', with full screen being worse (as in the issue occurs sooner).
Rig Info:
HMD: OG Pimax Crystal
CPU: Intel Core Ultra 9 285K
GPU: 5080 OC
RAM: 64GB