I wonder what’s the problem with shadows … I guess the games use some 2D tricks to cast shadows instead of making them on 3D that would be more GPU Intensive.
When I enabled G3D in kingdom Come Deliverance, I had some weird flickring in the image I didn’t know what it was, until I realiced shadows were different for each eye.
After I disabled an option about shadows on VorpX (S3D something) there was no more flickering, and some shadows were missing, but other shadows are still there, and I can asure you that playing a game like KCD with VR on 2020 is priceless, even with missing shadows.