Picked up an Nvidia Shield Pro last week to be able to pass TrueHD/Atmos from my Plex library to my Sonos Arc system (since Plex on Apple TV won't / can't). Tl dr: For anyone who's looking for a capable, dedicated Plex server solution, the Nvidia Shield is well worth considering. Overall, I'm still incredibly impressed and would still absolutely recommend to anyone looking for an easy to use and deploy Plex Server. I've even got it running Live TV & DVR using an HDHomeRun tuner. Had one glitch with a corrupted database (see below - no issues since putting it on a UPS), and had one issue with paused playback that a quick reboot of the Shield fixed, but otherwise all has been great both for me and for friends who have access to it. Plex has been running at least as reliably on the Shield as it had been on the iMac and having it on a dedicated box has been really nice. I've turned off the old Plex server that had been running on my iMac and the Shield Pro is now our full time Plex Server. UPDATE: Two months in and I'm still extremely pleased.

Using nvidia shield as plex server