So I recently purchased a USED Gigabyte windforce gtx 1080. I usually play overwatch at low settings at 1080p to get 300fps and when streaming it provides better performance. So I installed this card and at first it was running great. Cooling was good, frames were great, etc. But after a few days I have noticed that my frames have been stuttering and the card has only been running at 40%. I have a 7700k and 16 gigs of 3000mhz RAM so there shouldn't be any problem with bottlenecks. I have already tried reinstalling drivers, and when I did it, I realized that I am now unable to open Geforce Experience. The cpu doesn't reach 100% usage while this is happening, and temps on the card are usually in the high 50s or low 60s.