Extension just does not work. Not only does it not block ads, but YouTube still lags on playback. Firefox 137.0.2 on late 2014 Intel iMac. Please advise.

Barely Functional. While this add-on does technically do everything it claims to, it contains numerous glaring bugs. It is simply not finished. Tabs will continue to play audio several minutes after they are closed, videos will suddenly disappear leaving you with audio and a black screen, and Youtube runs significantly worse with this extension enabled.

In conclusion, just use Enhancer for Youtube instead. The UI might not be as clean, but it's far more stable than 'improve youtube' and has many of the same features.

44444

Doesnt work to change video quality

youtube is picking up the built i ad blocker. turn this off to fix errors. devs please fix this if able.

Does not function on Android

The extension is chock full of useful features, and they work as advertised. The downside is it causes firefox to have a memory leak when viewing certain pages.

Great extension, i have just one problem, I don't know what I did to the codecs option, but I can't get 1080p for every video anymore.
Whatever option I pick between AV1/VP9/H.264, all of them, none of them, I have some videos stuck at 720p, I have to change and refresh to find the good setting, and then other videos are stuck at 720p...

Doesn't work on Android.

Almost too good to be true. But so far, it seems it is.