I currently have a Sonos Beam Gen2 connected to my Samsung 4K TV on HDMI 4eARC.
My Apple TV is connected VIA HDMI to Port 3 of my TV.
I am playing Netflix movies that are Dolby Atmos but the Sonos app shows Dolby Digital 5.1.
Things I have checked…
Netflix is premium Ultra HD and quality is set high.
Apple TV is set to Audio Format “off”
TV audio is set to Bitstream-Dolby Digital 5.1
Can't seem to get “Atmos” to work...