Here are depictions of (in order):
Resized window going white before it’s contents resize
Window tiling suggestions only animating right side of the screen
Windows rendering one by one after super+d
The kdeconnect stuttering I mentioned happening with passmark. Not sure if it’s visible in the video, but was very noticeable in person and also made the display brightness fluctuate. (This is probably a problem specific to my install/configuration as it didn’t used to happen in the previous install)