I recently got a XFX 7770 1ghz core edition, it has been able to max out borderlands 2 and far cry 3 fine for about 6 days but now it slows down almost anytime something comes on screen, borderlands 2, a few enemies come on screen and then the games fps drops like crazy, and won't go back up unless looking away, i t was running it fine just yesterday though. I'm freaking out someone please help