Having a few issues getting my new Beam to play nice with Apple TV 4k... Initially I had a long lip-sync / delayed audio issue when my Apple TV audio output was set to 'Apple TV', by default. I switched audio output to my Beam (exclusively), which resolved the audio delay issue, but now I'm getting very odd spikes in volume in-between episodes on Netflix (via Apple TV), where the audio output seems to be resetting / reverting back to default 'Apple TV', instead of to the Beam. This is an issue because I'm back to my initial lip-sync issue, but most annoyingly the volume spikes up really load - which my wife & sleeping baby are not finding amusing!
Mi Tv 4C 50" 4K HDR
Apple TV 4K (plugged into regular HDMI 2)
Sonos Beam (Plugged into ARC HDMI)
Any advice on how to resolve this, would be much appreciated!