I’m seeing the same problem. Funny how it’s only happened tonight and not the several hours I’ve been playing with it. Just a few observations:
1.) this problem seems unique with the Siri Remote. The classic remote, paired with the same Apple TV unit, in the same place, doesn’t appear to have the same problem. Might have to move this remote to a new room and test it there.
2.) Definitely not a battery problem. 77% charge, so it should be cool.
3.) Apple TV remote are Bluetooth, right? They shouldn’t be interfering with WiFi signals.
I get the feeling we might see a firmware push sometime in the future (if it’s capable of doing so at least). At least it’s encouraging to see others having the same problem.