setup: Samsung HDTV 65” 65EH6000, Sony STR-DH550, Apple TV 4th gen, high speed HDMI cables. Issue: tv input keeps dropping, upper left input box displays every time, sound and video cut off for 3-5 secs typically. Usually happens every 30 mins to an hour or sometimes not even every day. From what I’ve read so far this could be a handshake issue with CEC? My other thoughts are voltage fluctuations (rural home, i know i have fluctuations regularly when appliances kick on, but i haven’t really observed the tv issue during one of these). Other thought is i need better shielded cable? Today I have tried new cables between Apple TV (main source of media), Sony and TV - so far the issues seem to be worse. Today it was cutting out several times a minute and even going completely black. I had to restart all equipment to get it to reconnect. I also got a new error message from Netflix today saying content restricted/couldn’t be played - never had that before. Any ideas for me to try? Don’t want to sink a lot of money into cables if that won’t work, but as it went today, it is unusable.