When I start a flight, my FPS are normal (like 55-60 fps in clear skies). During flight and until I restart the sim, the FPS drops do 30-40 fps, and GPU usage goes to 50-60% in Task Manager.
Interestingly, when I press ESC to main menu, the GPU usage goes high again and FPS becomes the same during the start of flight. When I quit the menu, it drops again. (During the beginning of flight, the FPS are the same both on menu as in flight).
The problem is happening in every aircraft, both on DX11 as DX12, even with Traffic off and TLOD at 10.
I think this is mostly associated with 3rd party mods/apps that need updating although the occasional glitch in the matrix has caught me out with no mods involved, very rarely though.
Then maybe a hardware or drive issue e.g virtual memory; make sure drives are not too full and are regularly optimized/defragmented. Unfortunately I can’t actually see inside your PC. You probably should test full vanilla to completely rule out 3rd party mods and apps but that’s a real PITA so try other stuff first.
PS. 77°C @ only 58% usage … your gpu temps look high to me so keep an eye on that.
at least we see two cores in a high load ( P5 and P6 with its virt. hyperthreading )… in your former image the turbo-speed was higher, so I assume there was only one core in high load. So, I assume its just the mentioned limited by mainthread thing. Of course, cant be sure here
You can try to cleanup the rolling-cache, app-data-folder, etc. and also check hints within the other topic I have linked, e.g. dependency to installed mods.
And of course, have an eye on the temps, like @DensestSnail693 mentioned.
