When I set FPS to unlimited, I get 60+ PFS, and all is very super smooth - EXCEPT:
1) GSX service cars etc are stuttering heavily
2) GSX and sometimes the airplanes themselves change into black colouring only
If I lock the FPS at, let's say 30, everything runs smoothly enough to enjoy (incl GSX) and no weird colour problems.
So that's the solution I guess. But I would still like to know why "unlimited FP"S can have such an impact on things.
P3D 3.2.3 (latest version), WIN10