AirPlay recommendations for Apple devices
Follow these recommendations for the best possible AirPlay experience:
Apple TV should be connected to Ethernet if available.
Important: Apple TV should always be connected to Ethernet when using Dynamic Frequency Selection (DFS) channels on the Wi-Fi network and peer-to-peer AirPlay is desired.
Mount the Apple TV with the rubber side touching the surface it’s mounted to and with few or no obstructions between it and the other device.
Any objects between the two devices could interfere with the Bluetooth Low Energy (BTLE) or Wi-Fi signals. Mounting the Apple TV in a cabinet, behind a TV, above a projector, or in the ceiling could degrade the signal between the devices. Ideally, the Apple device should be within 25 to 30 feet of the Apple TV.
If possible, avoid using Wi-Fi channels 149 and 153 in rooms where peer-to-peer AirPlay is frequently in use.
Though the devices will share air time fairly with the infrastructure network, removing any conflicting traffic from the room improves the stability of the AirPlay session. The Apple TV HD and Apple TV 4K can also use an 80 MHz wide 802.11ac channel at 149,80 if the device streaming to it is also 802.11ac capable, though the increased throughput available with 802.11ac makes airtime contention less of a concern.