It continually slows down websites that don't even have videos on them. e.g. google docs continuously has problems running when I had this extension installed. Removing this extension solved the problem. Why is it even running on the page?

I had to disable it since it was causing serious issues to some websites that had nothing to do with youtube. The developer kindly replied saying the issues would be addressed, but I wonder if I can now trust it won't do the same again, with some other website/web app. I will give a try again as it's a very useful extension

I can’t use it..why?

each press of the button expands the video screen into full screen mode, and then the next button decreases it to normal dimension. entirely frustrating and unnecessary.

conflict with translatesubtitles.com, the translate box dont show up when using TRAN SLATE/EDIT SUBTITLES section, found out cause by this extension, disable it the problem gone

After the update, it stopped working :(

Reverts to 1x speed when changed to full screen or back.