Great improvement over the Vanilla Twitch player. Notably good to get rid of ads, and for the possibilities given to tweak video buffering and all just like you want.

I just wish there was a way to force the UI to remain visible at all time (currently, if I move my mouse out of the video panel, things like the pause button get immediately hidden).

Edit: thanks for your superfast reply. That wasn't really my question though, pause was just an example for illustration, the thing is I just want to keep the whole UI visible at all time. That being said, apart from this minor point, the extension is AMAZING. Can't believe I've been able to bear Twitch without it before, it's a life-changer. Thanks.