I just got a M1 MBA a few days ago (yes I've posted a lot about M1 MBP, I actually returned it). When viewing Youtube videos on Safari, it keeps downgrading my quality automatically. If I start at 4K after a while it'll go to 1440p or starting at 1440p will cause it to go to 1080p. This happens most often when scrolling through comments. This never happens with Chrome. Now, I never updated the MBP to 11.1 before returning to compare. Anyone having this issue with Big Sur 11.1 with Safari?