Hi,
I played alot with these settings, even checked in Internet for solutions, many says that there is an issue that with AMD CPU and AMD GPU these things happens, especially for 6600 XT (but in my case this happens while watching video and playing game, the game suffers alot) I have enabled SAM now which doesnt seem to have a difference, just that now in FH5 while only having game running, there are dips in fps every 10 seconds or so.
Literally nothing helps and I am not sure if it s graphics card, the incompatability issues with build, or just drivers.
Just a note, I am running 4 monitors setup, the main is 240hz. others 144hz.