I have a hd 7770 1gb and a fx 4100 previously me performance seemed decent, sometimes i could even play on high pre set. However now that is impossible, even on medium i get like 40 fps and stuttering, cpu usage is always full basically, just bouncing about between 90 and 100 and gpu is at 70. Its not temps, I have already checked and mine should be fine. Any ideas, thanks in advance.