laggy game recording, due to gpu or cpu?

Wfs0801

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Apr 6, 2014
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I was recording gameplay of far cry 3 earlier and when I watched the video back there was periodic lag, or like a quick jump in the video for about a second. Not a big deal, but when trying to put out a quality video it makes a difference. This concerns me especially because it would only get worse with newer, more demanding games.

Would this quick lag be due to my gpu or cpu?

Gpu: Asus Radeon R9 270

Cpu: AMD FX-6300