Hi there,
I have the same setup (5950x and 3090). Only switched SMT off with no additional PBO optimization yet.
I found that OXR on 150 with TAA 70 in the Sim and more or less all sliders on ultra with 200 LOD still gives me around 30 fps with everything else being crystal clear.
It feels like the 100/100 setting, but with better performance.
Motion projection is off…