Since I didn't see any actual A/B testing wrt DX11 vs DXVK I asked a friend to run the Dawntrail benchmark Max settings, 4k. He's running on a Ryzen 5 7600 CPU and the 9070 XT with default clocks on the card.
Quote:
DX11
Score: 10808
Average Frame Rate: 75,61709
Minimum Frame Rate: 47
Performance: High
DXVK
Score: 21593
Average Frame Rate: 163,9759
Minimum Frame Rate: 49
Performance: Extremely High
That is an absolute stupid amount of performance uplift by changing to a 3rd party renderer and tells you something is absolutely ridiculously amiss here.