I have a Sony A1E television that is running android tv. I have a PlayBar, two Play 1's, and the Sonos Sub paired together to create the home theater setup. I primarily use an AppleTV 4K for streaming hooked up to the TV. Starting in May, the sound would fall behind the video by roughly two seconds. If I restart the tv or Apple TV, the issue fixes itself. There does not seem to be any reason for the delay, and it will happen randomly. We can watch a movie, and it will happen an hour, or we can be watching tv, and it will happen 20 mins. When you disconnect the Sonos, the issue does not occur. I have replaced the Apple TV, optical cable, reset the television, reset the Sonos speakers, changed the HDMI cable connecting the AppleTV, and still no resolution. Any idea what could be happening? It should also be noted that I use a Sonos Boost and have a consistent 450 MBPS down.