When I was flying an A320 from ENVA to EKCH, the FPS was normal at the beginning. The FPS was about 50, and then all of a sudden it dropped to 6-7 frames.No matter how I adjust the graphics Settings, it doesn’t work.Also appeared in the middle of their own black screen (actually just turned off the brightness, it is ok to adjust back).I updated the graphics driver to version 456.38 last night, but I don’t think it was the graphics driver that caused the above BUG.There have been too many problems since MFS2020 was returned to 1.8.3.0.The main configurations of my computer are I9 9900K, 2080TI and 32G 3200.