Having the same issue with Dragon Age II, I captured a video of it. I can play with no glitching if I use DX11 but then I can’t use geometry mode, with DX9 I get this flickering. I tried adjusting every VorpX option with no change. Sorry for my loud birds, I didn’t turn off my mic before recording.
I have the same issue, I bought VorpX 2 days ago and it works fine, but the next day when I start my computer I have this exact issue. This morning the same thing happened and I don’t want to keep making more installation folders. Hopefully someone has an idea what the issue is.