That might be a sign of excessive congestion on the channel used for Airplay. Esp with device to device direct link, latency should be minimal. If you can, try

That might be a sign of excessive congestion on the channel used for Airplay. Esp with device to device direct link, latency should be minimal. If you can, try moving nearby AP’s off the AirPlay channels for your region. For the US: “If possible, avoid using Wi-Fi channels 149 and 153 in rooms where peer-to-peer AirPlay is frequently in use”