Plex on HA is not streaming through the local network

I just set up Plex on HA and the streaming quality on my TV is really bad.

When I turn off "Remote Access" via Plex, my TV can no longer find my Plex server.

I have my HA box connected via ethernet to my Deco modem, and my TV is connected via WIFI. I imagine this should still be considered a local network, but apparently it isn't.

Is there a setting or something I am missing?