Need help diagnosing an issue.

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When playing games, I can play about an hour maybe 2 with no issues. At a random point my games will start stuttering and losing frames to the point i have to end task. My CPU and GPU temps are fine. Everything is running fine as far as hardware monitors are showing. I noticed during one spell of it happening my CPU usage for the game dropped. This happens in every game i play no particular one is more or less affected. I just reset my CMOS to remove my CPU overclock to see if my CPU was hanging, haven't tested yet but i wanted to post this to get other ideas while im testing since it could be awhile before it happens.

 

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It was not the CPU overclock. I again noticed my game (World of Warcraft) CPU usage dropping to around 3-4% when things go bad and noticed ram usage is also about 300-400MBs

 

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Anyone got any ideas?

 

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did a windows re-install.... no fix... still looking for input on some ideas.