mobile

I have a 2013 Moto X XT1053. I recently run into the problem where if I play a video a few seconds later the video would stop. This happens on youtube video (played via youtube app), local video playback( play via various players), and also games. When I start a game it would boot me out to the home page in a few seconds (sometimes longer). Seems any video or graphics will cause this bug. I have not updated the phone and have been running 4.4.4 for a while without a problem. It just happen out of the blue one day.

This bug happens even if my phone is bone stock.
So far I have tried reset the phone a few times. I also reload the factory image via RSlite to go back to a fresh out of box state. But it still does the same thing. I'm looking for help and suggestions. Thanks