Kodi V21 on LG C3 TV no DTS sound

Hello,
I installed Kodi V21 yesterday via the WebOS dev manager. The app is working fine on my LG C3 TV. I have set everything to passthrough for audio, but I can only select Dolby Digital and not DTS or similar because they are not listed. I also have Plex on my LG, and DTS works there. Does anyone have an idea how to solve this?