I've been scouring the forum for info and it turns out that many posts from about a week ago are about fps issues. I also have an FPS problem today. I don't understand why before in 4k I had 70fps stable, and now I have drops at 45/40.. I tried everything, delete the fxo and metashaders2 folders in the saved game. Defined the grapichsconfig.lua file (in the DCS/Config root folder) with the value of 180 replaced by 300 . I still lose 20 fps when I look at an AH64.. Something that doesn't happen when any module is flying next to me.. Since 2.7, I hadn't encountered any fps problem until then; It does not mean anything. I'm looking.. ( Note: My graphics drivers are up to date, windows too etc .. )