Big performance drops in games?

Oct 8, 2013
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So I started playing CS:go was getting about 120-140 fps, I then finished the game on 60 and started the next one and had big drops down to about 40 fps. I am downloading battlefield 4 at the moment, do you think that may be it or does it seem to be a compatibility error?
 

Effeectt

Honorable
Aug 16, 2013
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Solution