Did you perform the test in VR or on Desktop and did you have any NVidia optimizations enabled…
AMD tend to also act differently with different CPU’s (prefers their own AMD CPU’s over Intel and can actually give a 20-80% better performance if the GPU and CPU are both AMD)
How much RAM and what kind if RAM does your testbench have, which is also a major factor as NVidia uses more RAM as before processing into VRAM)