Plex "just works" until it doesn't. The further away from the desktop you get the less reliable Plex becomes. In the browser it's flawless. On smartphone and tablet native apps I get maybe a one to five percent rate of not being able to see the server despite the fact I'm logged into it on the same device's browser. On embedded devices like smart TVs and streaming sticks Plex is a stinking pile of shit of an app. It's laggy, it crashes incessantly when you do something like skip forward after skipping back, and it constantly fails to see the server running on the same LAN as the device. This happens across android TV, Roku, Chromestick, and Firestick. It happens across different locations, routers, and ISPs. Plex is high on my list of "things I use because there isn't anything better but I still hope their developers stub their little toe every day of their lives".