Not a problem I've seen. After checking the connections, swapping out the HDMI cable would be the first thing I'd check, too. More than once in the year-plus I've owned it, I've noticed glitchy behavior from my ATV4K, only to have it disappear after updating the OS. See if there's an update waiting to be downloaded & installed?Anybody having trouble with their Apple TV 4K cutting out and flickering the TV every 2-20 minutes? Just started in the last 2 weeks. It’s hooked up to a new Samsung TV via Marantz Cimema 60. Waiting for a new fancy HDMI cable to be delivered. Tried switching it with another to no avail. The marantz plays everything else perfectly - Fire stick, turntable, blu ray player. I’ve messed with the setting of the marantz, tv and Apple box but nothing works.
Also: welcome to QQ!