Video playback stuttering


I have this issue where when I play back videos, mostly when they’re 30fps, that they are stuttering sometimes. I first noticed this in Firefox, but it’s also happening on VLC or MPV.
I have all the packages for hw accel installed.

I have connected two screens, both 1080p at 60Hz and I tried to disconnect one screen but still same issue

Everything else like running games and such seems to be fine except video playback which is as I said stuttery sometimes.

What could be the issue?
I hope someone could help me figure this issue out…