DirectX 11 mode seems to run much better than DirectX 12, but it is missing DLSS and Reflex. There is no technical reason to omit these from the DX11 version as far as I know (God of War, a DX11 game, supports both), so I would like to see the developers support these features in DX11 too.

I wish, but since they aren't even fixing what is broken, I doubt...