Great!

I mainly got it for the smoothly adjustable video speed option ... very helpful for tutorial videos (we can generally hear/understand stuff much faster than we can speak) ... but it has many other features that I didn't even realize I was missing.

youtube window dissapears , when i change tab , or programm

When liking videos on night mode I can't tell if I've liked it or not! I can't tell if I've liked comments either!!
Other than that completely 100/100

fabulous

Really an excellent addon. Once it's blocked YouTube's various auto-play "features" a few times, you're going to wonder how you lived without it. The keyboard shortcuts are indispensable, and I love that I can override YouTube's broken "automatic" network quality detection.

Excellent add on. All praise for the development team

high quality extension that would usually cost $$$ on chrome.