Hey everyone,
Not sure if anyone else has noticed this, but after the latest LG CX firmware update, I am now receiving the proper Multichannel PCM 5.1 output on my Sonos system. Previously on either of my consoles via Xbox Series X or PS5, LPCM 5.1 content would always come out as Multichannel PCM 7.1 even if the console is set to A/V Receiver and 5.1.
Not sure if this was either fixed by the latest Sonos updates or the LG firmware update.
This is related to this issue.
Please read if you have encountered issues with 7.1 LPCM playback on Sonos via an LG TV