Decent when it works properly but that is rare. 90% of the time it doesn't turn off annotations despite being set to and an increasingly more annoying issue is videos loading in a lower resolution forcing me to reload the page for the set resolution to take effect. The extension seemed to work much better with the legacy version of youtube. Since that's been completely scrapped now this extension is becoming more and more inconsistent. Dropped my new rating to 2 stars from the 4 I gave in the past because the issue with annotations has still not been fixed despite almost 3 years having passed.