The TV reports Plex version 1.0.1 from its app store, but in the plex app it reports 3.8.0 and Vizio Sigma V1.5.6-UHD. Running the latest Plex server as of 6/28/2017. I'm a Plex pass user and my TV is logged into my account.
When I try to play most content, it'll play for a few seconds and then the buffering ring will show up and it eventually complains of connectivity issues. Both the TV and the server are on the same gigabit switch. I've tried searching to find solutions to this problem, if there's a setting i'm missing somewhere or I just need to lower my H.264 level or something I'd like to know what to do to fix this. I picked up a lifetime membership a few years back with the express purpose of using it on my TV, and it hasn't worked right for the last 6+ months on my new 4K TV. I'm primarily streaming 720p content, but it seems to work fine on chromecast (even streaming outside the house), mobile (android, iphone), and web and desktop clients.