New Shield TV, is it broken?

Got the 2017 Shield TV this weekend, really impressed with it in most cases but running into some issues.

1. Screen randomly goes black every once in a while. I'll be watching something and all of a sudden the video will go out, you can still hear the audio but the screen is black, TV is still getting signal .

2. Awful screeching sound. Randomly (seems to be after finishing a stream) the TV makes an extremely loud screech for 5 - 10 seconds, it is the loudest most annoying thing I have ever heard from any electronic device.

It seems like the problems occur mainly with netflix (did not notice them on kodi or plex). Still have to try amazon and vudu.Is this normal? Did I set something up wrong? Anyone else having these issues? I searched the sub for both issues and found some info on the tablet screeching but not the TV. If this is normal I may end up returning it as the screech is unbearable. For reference I'm using it on a Vizio P65 (2016 model).