Apple TV goes to sleep

Core Machine (Operating system/System info/Roon build number)

Win10
Corei7
16GB Ram
SSD
Latest roon server version

Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)

Gigabit Ethernet
Airplay

Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)

Apple TV 4
HDMI

Description Of Issue

Using iPhone as Control. When sending audio to the AppleTV, it seems unaware of it and goes to sleep as per the AppleTV sleep settings (15 minutes). I do get audio, it plays fine, but it doesn’t show album art, time of track or anything. Just audio and goes to sleep after 15 minutes.

Anyone else has this issue - how to resolve?