Im having same exact issue. Silicon power ud90 2tb ssd. Only happens with battlefield 6 after one game or two then disk usage goes to 100%. I have to completely shut down the pc to fix it cause closing the game doesn't fix the disk usage. I did a disk clean up and disk usage dropped then tried opening a different game and went up to 100% again. I dont think its the ssd because I've played the finals and overwatch just fine for more than 4 hours at times with no issues. Ssd temps only get to 38c for the hottest after playing for a while. I think it might be a bf6 side issue with compatability with this ssd. Seen different reddit post about people having the same issue with the same ssd
