I'm not sure what the state of hardware accelerated video on OSX is, but at least on Linux Firefox doesn't support hardware decoding while Chromium does, and th

I'm not sure what the state of hardware accelerated video on OSX is, but at least on Linux Firefox doesn't support hardware decoding while Chromium does, and that leads to a 20% vs 5-10% CPU usage while watching Twitch source streams for me.