Specs: 3080ti, 64Gb @ 3600Ghz ram and 9700k @ 4.7Ghz cpu.
Results: It actually lowered my frames. Used to have 45fps with occasional dips in all multi-player servers (dips happens when F14 spawn on ground or Awacs contrails).
With it enabled I get 35 to 38fps in multilayer servers.
Settings
NVidia Control Panel Shader set to 10gb (very important), VR Prerender FPS 2, Power set to Max
Resizable Bars enabled with VR direct X profile enabled.
Mods Simple vr shader and Vrperfkit (0.9 using Cas)