Every few hours my Apple TV screen output blanks out for a few seconds and input from the remote is ignored. A few seconds later the screen comes back on and remote commands are accepted. This [then] repeats every few seconds and then clears for a while after a forced restart. Running tvOS 11.2.1 Anyone have any ideas? I suppose I could do a full reset, but I dunno of this loses all my HomeKit settings/automations which are fairly numerous. <edit> to clarify - this isn't a one-off blanking out which repeats maybe an hour or two later, this, when started, repeats every few seconds and can only be stopped by a forced restart.