SOLVED!!

So I find that regardless of how smoothly my game runs, loading screens cause heavy FPS drops and occasionally crashes. I don't understand why this happens because again, when I play on ultra, the game runs perfectly smooth once I am past the loading screen. So what is it about the loading screen that makes the game crash and how can I fix it?

EDIT: So it turns out I had a stand in which my mouse was plugged in and by unplugging that stand and individually plugging my mouse, the loading screens seemed to have fixed.