JowshFTW it looks like the GPU is stalling because the GPU is dropping down to 4fps. Usually if it were a CPU issue than the CPU would drop to a low FPS but the GPU would stay at high fps. That's not happening here, so it's most likely a GPU issue.
I believe the graphics card isn't plugged into the motherboard all the way. In the HWiNFO screenshot the graphics card is running at PCIe x8 speed instead of x16 speed.
This usually happens when the graphics card isn't fully plugged into the motherboard all the way. Try removing the graphics card and then plug it back into the motherboard.
Then check HWiNFO and see if the graphics card is running @ x16 speed. Let us know if this fixes the issue.
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