In my trial - error tests I found that If I turn off in graphics settings Tab the oclusion and in VR menu I check "overrides steam resolution· an move the slider to 95, The game runs smooth in my Reverb G2, and dont crash....played a 10 laps race and all worked fine.
Now will try to run DLSS on in balanced or quality mode to see if it crash.
My rig specs are:
I9 - 10850k, 64gb, msi 3080ti 12gb and reverb G2 with motion retroprojection in always on on steam, and default steam settings.
In game settings VR high minus mirrors (low) DLSS (off) and occlusion (Off)
Hope this Help, think the most "demanding" is the ambient oclussion, don't know why