I am not seeing the Android TV screensaver activating when I pause a show in Emby for Android TV.   I understand we are relying on the Android TV screensaver for Emby and that there is not one coded into Emby. I have my Shield screensaver set to 5 minutes and it does work, but not when Emby is paused. I believe it did at some point but I can't say that for certain.   If Emby is open (not paused) the Android TV screensaver does start at the 5 minute mark.   This is v1.4.52g for Android TV.