I think everything works? I know PP's didn't work in AC for awhile but they have it working now, although we still can't scroll through PP shaders. Default only. I think everything works in Pcars? All the signs and flags are in VR. The one added problem for VR is focusing points and massive gpu load because of the 3D environment. This makes for some blurry areas. This is where, I think, AC shines. Less eye candy seems to work better at the moment but I'm sure it's going to change soon.