Upgraded from 5600X to 5800X3D. Mem = 32GB / 3600Mhz. GPU is overclocked RTX 3060 (+136 Mhz).
Instant Action: Caucasus, Graphic Preset= High, Vsync = Off, 1440p full screen, DCS 2.8.0.33006
TF-51: Hot Start: Fps = 71 to 73
SU-25T: Free Flight: Fps = 76 to 78
No comparative data on the 5600X with these exact same conditions, but noticed a significant performance increase with DCS and MSFS 2020.
Additional data from the Marianas which is known to have more of an impact to the fps.
Instant Action: Marianas, Graphic Preset= High, Vsync = Off, 1440p full screen, DCS 2.8.0.33006
SU-25T: Take Off: Fps = 44 to 45
SU-25T: Air Combat: Fps = 53 to 54