Playback Issues - Audio/Video & Power

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
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Level 7

Roku Plex streaming downgrading audio to 2.0 LPCM

Hi all,

I just received my Roku Ultra and finished setting up and I am encountering the following problem: no matter the settings, my Bose Cinemate gets LPCM 2.0 instead of surround sound.

I am streaming surround content from my NAS (WD) to the Roku Plex Channel.

Here is what I see from the NAS Plex Dashboard


Also in the Plex app on the Roku, under streams, it recognizes the right audio track.

What am I missing?
Audio mode is turned off, as are subtitles (I checked previous topics).

I see AAC is a supported codec.

Any ideas?

Thanks to anyone who might help, I am going crazy here

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