I just want to say... You guys %^&*ing rock!!!!!
I've been using Emby since giving up on Plex in August, had problems with stability on the PI, but Luke has been so responsive to my other posts. In the past few beta releases Emby server on the PI has become indistructable as far as crash/hang events go, and the DLNA issues/log flooding are a thing of the past. Also added the TVH plugin back and it's rock solid.
I've added an SSD to the PI to take some of the workload off the SD card and I think that might have helped in some way, but how the heck Emby manages to transcode .TS files from TVHeadend live on a PI at 30FPS baffles me.
I have 2 £6 DVB-T tuners and Emby on the PI, can record 2 channels and stream from Emby simultaneously and it works perfectly.
Anyway.. back to topic - Just threw the 3.0.4 Pi image on my spare Pi 3B, added an old MCE IR receiver with MCE remote that was kicking around and in 5 mins I have Theater with full remote control (one tiny button mapping issue but who cares).
It's flawless... did I mention you guys rock!!!
P.S... Any chance you can make Theater work on the Pi Zero W? I know that's a big ask because of electron etc