I have a Playbar with 2 Play3 speakers as surrounds. The sounds will cut out intermittently from the surrounds, but the Playbar will continue. Doesn't' matter what source, including TV. No pattern that we can see.
We have an eero system to take care of our WiFi and the surround speakers are right next to the main router.
Diagnostics number 766266589.
Thanks for your help!