I used to use Chrome, never had the issue on chrome. I recently switched to firefox. I like to have a video playing in the background as I do other things on my PC but it stutters really badly and is so far behind the audio and it is genuinely infuriating. I have a high-end PC so it should not be an issue. I have Tried all the "fixes" I have found, safe mode, hardware acceleration, disabling media.wmf.vp9, nothing works.

Is there an actual fix for this or is it a case of dealing with it or going back to another browser?