Airplay 2 just doesn’t work. For an even more frustrating experience, try syncing an Airplay 2 ATV with a 3rd party Airplay 2 powered speaker. I went back to old AEX's and forced Airplay 1 at the source to avoid sync issues, as well as other issues. Could have been the 3rd party box, but i suspect Airplay 2 is nowhere near ready for prime time. More @Wikipedia
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