I was playing Dota 2 when my FPS suddently started dropping, then i made some tests and i found out this:
My GPU usage is spiking, i dont know why...
I alreadly tried to reinstall the drivers and format my PC and i still doesnt know why its like that...
XFX R9 280X 3GB Black Edition
FX 9590 Vishera
8GB HyperX Blue
OCZ 700w stealthxstream
4x Arctic F12 Coolers