Memory Leak/Preformance Issue

[Squa11_Leonhart]

This is interesting because I hear my video card's fans cut down whenever the slowdown happens. I'd imagine if it was struggling to render something, it would work harder so the fans would speed up. But it seems that it's throttling down the performance of the card for whatever reason.

its not a matter of struggling,
the framerate increases and decreases dynamically based on the amount of load applied. during a loading screen less power is required so the clockrate drops down.