Videos are horribly choppy when I try to view them fullscreen in a browser. It's like playing a game without V-sync on. The same videos work flawlessly in MPV.

Videos are horribly choppy when I try to view them fullscreen in a browser. It's like playing a game without V-sync on. The same videos work flawlessly in MPV. Firefox in Ubuntu 18.04 with a Nvidia 750ti and proprietary drivers. YMMV.