I'm getting this weird visual stutter when I play youtube videos, specifically only youtube, the sound is fine but it flicks between a few frames all the time, and its really annoying and hard to watch. I only recently switched to ff so I'm not sure how to fix it. My pc isnt terrible, and i've never had this problem with chrome. Things I've tried; - turned off hardware acceleration - updated gpu drivers - downloaded h264ify, which did nothing. https://puu.sh/DvhQN/78b605b5e1.gif You can kind of see whats happening in this gif. I'd prefer to get a complete fix (instead of me having to do something every time it happens) asap and not get headaches when watching videos ):