Airplay audio out of sync after Apple TV update to 12.2.1

Apple TV latest generation, just updated to 12.2.1 (16L250) and Airplay via direct (same wifi network) and peer to peer connection(over Bluetooth,) from both a new iPad Pro and and iPhone X have resulted in a major a audio sync issue, from at least 2 different different streaming apps on these devices. I've tried resetting the Apple TV, rebooting iOS devices, rebooting the Samsung television, all to no avail. These apps and connections worked perfectly prior to the Apple TV upate. Same issue using WiFi network Airplay and peer to peer. I've ensured that during peer to peer operation, Bluetooth is on, and wifi networks are "forgotten."

What left is there to do? Help gratefully appreciated.