Airplay devices involved here are a Hegel H390, HomePod, Sonos One, Sonos Play 5, and Sonos Beam. The H390 is hardwired ethernet to the Core.
When I try to stream to multiple Airplay devices, nine times out of ten it stops playing after 5-10 seconds of initial playing. When I press play again, it continues to stream consistently without any issue. Any ideas why this initial dropout occurs?
Can you please try grouping one device at a time and note if playback stops after adding a specific device to the group? I’m wondering if the issue is due to just one of the devices you listed as being problematic.