My Plex server is on a Windows PC. I have Plex installed on the TV the Xbox the phones the PlayStation Etc.
When I pull up the Plex on my phone and pick a movie and I can choose to cast it to various devices that are in the house but it uses the phone as an intermediary casting device. So I can play in pause and fast forward using the phone. But I don’t want the phone to be the intermediary device. I want the media to play in the Target devices native plex application.