I really liked this add-on! To begin with, it works better than YouTube’s built-in player. The controls are minimalistic and disappear when not in use, so they don’t obstruct your view and everything stays simple; and best of all, it runs smoothly. I’ve only tried it on a few YouTube videos, which is exactly what I wanted it for: watching videos at three times the speed and it accomplishes that perfectly. Thank you so much! :D