The most important feature for me is missing: Disable 60fps videos, because it's useless at 2x speed, but doubles the bandwidth

Great

This is one of the best addons for youtube ever. What is missing now is the ability to enable HFR 60. But lately as already reported, the addon sends you to community posts randomly and it remain stuck in refresh loop.

It would be great to access the addon's settings from Firefox's add-on manager. For those of us who don't change settings very often, the icon is cluttering up the space. Thank you

Annoying like no other thing :
Got an old PC struggling with some contents and this extension now actually forces the definition instead of respecting user's choice whenever a definition change is needed.
Basically unwatchable videos many times..
Old behavior was superior by far as it respected the changes made after the module had done its work.

worked good for a day then it sends me to a community post each time I try to go to the YouTube homepage and it just refreshes over and over and over until I either close the tab, search for a video from Google, or have a direct link.

Works perfectly, but on Firefox 52.5.3 the addon is always disabled by default and FF asks me to install it again, and again and again. It seems it is not so compatible as author would want it.

glitches out and takes me to a community post on a never ending loop

I love this addon but it now causes youtube to redirect to channel posts/pages and I cannot stop it. Will need to disable until this is fixed.