

Plex webos app on LG CX set to accept all sound formats except DCA/DTS. The TV HDMI sound output is set to passthrough (webos settings).

Internal sources (apps) will not passthrough True HD. It will support TRUE HD + ATMOS via HDMI from an external source (bluray player etc). The LG CX doesn't support DTS at all but pretty sure was updated to support 8 channel PCM. Sonos ARC doesn't supports DTS after update (convertes to PCM I believe) Ryzen 5950x, 32GB Ram and RTX3070 gfx card. Plex server is running latest verion on Windows 11. I use the internal PLEX webos app to play back a variety of ripped media. I have a LG CX connected to a Sonos ARC via eARC and HDMI 2.1 cable.
