CPU bottleneck will Overclocking fix it?

Steel_Nugget

Honorable
Dec 5, 2013
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I have a FX 6100, GTX 670 4gb FTW PC (Just took this GPU out of my Intel PC so I know it works fine) When I play games I get big frame drops. Eg Metro Last Light I am getting around 40-50 FPS and then a Mutant/enemy will show up and my FPS will drop to 5-20 FPS. Which makes it unplayable at almost any settings. The weird thing is my CPU usage says I'm only using 60-70 % with 1 or 2 cores using maybe 80%, while my GPU is at 90%. So is this a CPU bottleneck? (I think it is) Would overclocking it work? Or would I have to buy a FX 8320?
Thanks!