in VR, game crash when post processing is enabled

[patientx]

Hi there. Just found about about this whole modding thing with ac and all these wonderful stuff here. Installed control manager, installed sol, because my pc is on the weak side I start with shadows, mirrors and post processing disabled. Found the desired options with the standard graphics options and successfully enabled shadows and mirrors. But if I enable post processing even with everything off, game crashes while loading "reflection maps" , crashes steamvr and have to restart steam etc to make everything right again. I don't play in verh high res since I have a rx480 8gb and with aa 8x, anistrophic f. 16x , world detail max etc at 1556x1556 game stays above 80 fps on freeroam for example on la map. And those maps are what I am gonna play so no need more performance. Any ideas ?