Stereo PCM audio from KD-49XG9005 to Sonos Beam

[zryzner]

Hello, I'm facing strange audio issue on my KD-49XG9005, wonder if someone experienced something similar.

I have 2nd gen Sonos Beam connected to HDMI-ARC and NVIDIA SHIELD TV PRO (2019) in other HDMI port on the TV. I'm using Shield's remote (and HDMI-CEC) to turn everything on and off.

When I turn my stuff on, the TV sends audio in stereo PCM to Sonos Beam. I have to turn it off and on again to get Dolby Digital to Beam. It seems to be happening only after the system was off/sleeping for a period of time.

Shield has Dolby audio processing turned on.

TV has following audio settings:

Audio output -> Digital audio out -> Auto 1
Input-specific Sound settings -> Dolby Digital Plus output -> Dolby Digital Plus (for both HDMI ports used).

Is there some settings I might have missed? It's a bit annoying to do this on/off/on to get the desired audio output. Thank you!