I'm using an RTX 3070 Ti with 517.48 driver and Odyssey+ headset.  The framerate was constantly dropping below 15 fps (minimum for reprojection) with it set on DX12.  I flipped to DX11 and it was at 20 or 30 fps.  I have mostly high settings and the odd ultra, so don't expect much more than this, but I'm not sure why DX12 messes it up.  I'm not quite sure what the advantage of DX12 is, should I see an improvement in visuals?

DX12 is still fully in beta, don't expect it to be better anytime soon until it's come out of this period.

You would be looking for better performance. The current DX12 implementation is likely AMD oriented. Maybe it will get better for NVIDIA cards, maybe not... If DX11 works better for you, just stick with it. In my case (Oculus) it is not even stable enough to use it in VR, so I'm with DX11 too.

Edited October 7, 20223 yr by rka

2 hours ago, Grindathotte said:

I'm not quite sure what the advantage of DX12 is, should I see an improvement in visuals?

There is no visual difference in VR. DX12 can provide better multi-threaded CPU performance, but at the cost of increased GPU memory usage. If you are getting less performance with DX12 compared to DX11, you should check if your GPU memory usage is near the limit, as that will reduce performance. 

Thanks for the replies; I'll stick with 11 for now.

I've tried both and on my setup (older CPU with a Nvidia Super 2060 GPU) I find the frames rates comparable but less stutters and a smoother experience overall in DX12 over DX11.   However I think there is so much in the variation of hardware configs that there is no definitive one over the other for all rigs....its just test and see what works better for you and then stick with it....as they say "Your mileage may vary".   Would be nice if it was a solid one of the other but it just doesn't seem that way.....