My Evga gtx 960 keeps running at 1430. I have the card overclocked to run at 1556 and Once it gets stuck at this speed the only way to stop it is to restart the PC. But even though it says it's at this speed it runs like garbage, running games like farming simulator at 20fps! I've tried uninstalling and reinstalling the drivers and ega precision x but nothing works. Please try to answer this as fast as possible because I am selling this card soon and need it fixed, Thanks!