Great. I think it is important that the public create and maintain threads like this for others seeking help. I spent many hours on the net looking and did not find much. This should make a good reference for others.They're doing the remote because I also mentioned my problem with the volume jumping 3dB at a time (instead of 0.5 increments) in the event it was relevant to their troubleshooting process. Which, interestingly, is also an intermittent problem like the Atmos popping; though, could be totally unrelated. But, when encountering this issue, my other remotes (TV and AVR) control the volume just fine; it's only the Siri remote that acts up. And, it's not like a delay where I press the button a few times and then it finally catches up; I press Vol Up/Down, it lags a sec and finally changes the volume in a 0.5 dB increment, then I press it one additional time, and it jumps like 3 or 3.5dB (I'm using the decibel volume display on my AVR where they show as negative, and move towards 0 as you increase the volume).
Purchase date was 2021-09-16, although I bought from Amazon so I guess it could have been sitting around the warehouse for a bit. It had a pretty bad mildew smell when I opened it, enough so that it kind of hit me in the face upon unpacking. Didn't think much of it at the time since there were no visible signs of damage to the box or unit. Also probably unrelated, but who knows.
Glad to hear you've been having a problem-free experience since then. I'm going to reconnect mine to use until the replacement comes. I'm going to try disabling the "Match Frame Rate" and "Match Content" settings in the meantime to see if it helps at all; I was reading some posts on various audio issues, so figured it's worth a shot. Maybe that will help someone else, too, if they ever have trouble and stumble onto this thread looking for answers. I'll report back to this thread should I find out anything more.