Ok.

this AdOn is hardly usable!

Absolutely no setting options in the app, nothing at all. youtube movie windows are enlarged, but I don't want that because I want to decide for myself how big the window is. There is no possibility to set the HD in the app, no you have to do that in the video. Too many inconsistencies, therefore not usable, uninstalled again! Because I decide which settings I want to have and not the one who offers the AdOn, something like this is not possible!
And as I see, no update for 3 months, that explains a lot!

just breaks youtube. no videos play, all videos just go to a profile post about covid.

Nice

Beeld kwaliteit is goed , maar het stop op de haverklap. Jammer.

I absolutely love this plug in but at the same time it can break Youtube. Issues with playing a video and it randomly sending you into a loop on some random profile. I really wish they'd fix this problem.

It works just fine most of the time. But sometimes it automatically downgrades the quality setting, and if I try to set again my desired quality, the YouTube video player begins to blink and I have to either reload that YouTube video webpage or restart the web browser.