Sound quality Plex Kodi Connect?



Ok a few questions regarding Audio=
Im running Plex server on a Synology/ HP micro server.

I "cast" audio to my Kodi box(raspberry pi with Allo boss DAC) and using the PKC plugin

Is my audio stream being throttled or limited in anyway?

Ive moved over from Roon audio and and don't want to loose sound quality.

Any thoughts? Is this stream "bit" perfect?