Improves stream quality and stuttering on twitch and removes advertisements.

To anyone whose chat is not working: Allow "https://twitch.tv" in the cookie exceptions in Firefox. Make sure you use https instead of only http!
-1 star because I had to crawl through help menu in the addon instead of this being in the description on this site here. Also for the unprofessional developer response (after more than a month) "do not cry. read the help instead. LOL" instead of just giving a straight answer.

-1 star because the mouse cursor still always disappears which is REALLY annoying.

EDIT:
-1 star because the mouse cursor STILL disappears 4 years later. AT LEAST ADD AN OPTION TO ALWAYS KEEP IT VISIBLE!