Does Fire Tv Cube 2022 support passtrough DTS-HD and Dolby TrueHD via PLEX?

Plex Media Server
1

Server Version#:4.125.1
Player Version#:PLEX for LG 5.78.2
<If providing server logs please do NOT turn on verbose logging, only debug logging should be enabled>

2

TrueHD: Yes
DTS-HD: Only the lossy DTS 5.1 core.