I was surprised. I installed it as an afterthought while working on a separate CDM issue and really didn't have any expectations.
I'm not picky about video, but the improvement was very apparent.

Very good Add-on
It would be good if there is option to turn off video (aka Audio only).

Saved me from ads... thanks a lot Dev

No need to access data for all websites.

more like, YouTube Low Definition

Excelente

Nice Extension For Viewing Hd video and Low Mode always select you want select.

Messes up theater mode making videos too tall for the window.

Was a good addon to block suggested video auto play while keep main video autoplay "ON" to not push extra buttons. Now it doesn't block suggested video from autoplaying anymore. Now you got to totally turn off autoplay and play every single video you open manually or deal with stupid suggested video comming your way all the time.