XFINITY TV & Windows10 stream ***UNRESOLVED***

Xfinity TV streaming site playback on Windows 10 is stuck zoomed in when my laptop battery is plugged-in.

It's been going on for a couple of years now. Does not make any difference which browser is used. If the laptop is plugged into the charger the image will be zoomed in immensely. 

On the rare occasion that it does work, it will only play in Chrome for a few hours - 4 days and then it will play on the Edge for about another 3 days and go out for a few months. (Never in both at the same time)

Occasionally refocusing for moments at a time at the start of a show or when switching quality modes. 

So far the only fix is to go back up to Windows 7 or watch unplugged.