Cannot control chromecast audio, instead get message that surround sound is enabled, use tv remote
So I am using a plex media server (updated to newest version half an hour ago), streaming media over ethernet to my chromecast ultra. I cannot change volume from my android device or my google home assistant, when I try it tells me that surround sound is on and to use the tv remote.
Is this normal for surround sound not to be controllable from chromecast? I've never had this issue streaming any other content outside of plex media server. Is there a way for me to disable surround sound (I don't have that many speakers anyways) so that I can get volume controls back? Lack of native volume control isn't really an acceptable answer from my point of view.
Everything looks and sounds great, but I really want to be able to turn the volume up or down without having to search for a tv remote.