I was happy with my 6600XT running Microsoft Flightsim 2020 with most/all sliders set to max right. I'm happy with 30 fps. Suddenly I now get 20 fps, and this occurs no matter how I reduce the graphics work load. The fps monitor says it is workload is limited by the graphics card. .. it stays at 20 fps. Loading up the workload by banking the plane over normal scenery causes the fps to go to approx 5 fps for a few seconds, then goes back to 20 fps. Thoughts??