Upgrading the i5 8400 to i7 10700kf a completely new build few nearly a week ago. Made a big difference for me with the same GPU RTX2060super but not fps wise. Definitely way smoother.
This alone proves to me how important the CPU is in a program like this. No more low fps in Airliners or glass cockpit planes.
Still some lag at big airports in photogrammetry areas but nowhere as bad as the i5 8400 constantly reaching between 80-100%
This CPU sits between 20-30% on average or even below 20%
Only thing I cannot do is run some settings on ultra clouds is heaviest gpu setting on my underpowered gpu.