I'm playing GTA 4, and sometimes the FPS takes a dive. Sometimes the GPU is at only 60%, and two of the 4 cores are at 85-95% (the othertwo are at 60ish%). Other times the GPU is at 95% while the CPU cores are around 65%. Once in a while (not very often) the game drops FPS and neither the GPU or CPU are past 70%.

Is that sometimes the GPU is the limiting component, and other times the CPU is limiting?

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