Alright, the problem is mostly resolved after following those steps, though I found the core issue seems to stem from certain animations. The most reproducible, and still a problem, is a female Au Ra using /cheer; The game locks up during the middle part of the animation, which on my end just seems like a small stutter.

I'm thinking this may have caused the original problem but it had something to do with the animations in the cutscenes. I hesitated to post because I thought I'd try to find more sources that currently affect me, but for the most part my problem is now only that I will never see a full female Au Ra cheer.