Not sure. YouTube broke it on their own end – and conveniently only for Firefox again. 🤔

From what I read last week, basically they were sending chunks of the video stream in a completely invalid way. Essentially saying a new chunk of the video begins at an earlier frame than the last chunk ended.

Maybe they mean compiled without it entirely instead of disabled by default, but still available?

IIRC MIUI has for quite a while been tuned very aggressively in terms of memory management. That is to say, it’s probably not the browser but the underlying OS that is pruning processes to keep memory free when it really doesn’t need to.

It was doing this to me a while back. Are you using a VPN or using an ad-blocker specifically for Twitch’s embedded stream ads? (e.g. TTV-LOL-Pro) The latter work by using proxies and so I think trigger the same sort of effects. Disabled it and it worked fine. It also happened on a Chromium-based browser when I tested it out.