Plex wont play DTS-MA (On Firecube 3rd Gen), only pass PCM. Plays Atmos fine

[FordGuy61]

Plex was having trouble with DTS passthrough on Cubes. Looks like they had to disable it. It should be decoded by the cube and passed as multi-channel PCM. The conversion to PCM is lossless, so there should be no quality problems.

Here’s the post that mentions disabling DTS passthrough. Other posts in the thread have additional info.

Plex, Fire TV Cube and DTS

So it’s looking like we will need to disable DTS passthrough on the Cube entirely as its support is subpar nothing we try works. I have had a few occasions where the cube would return that it doesn’t support DTS at all. I cannot reproduce the same issue on the newer FireTV 4K stick (AFTKM) that has OS8.