I have mentioned this in the past but since it happened again last night and the wife was not too happy about it I decided to bring it up again.
I have two DVR's because the DVR does not support User Profiles. This is not a big problem since I have 2 Synology Boxes anyway. But the problem is if one of the DVR's is down (maybe doing an update) and the Apple TV can not find the "last" one it used it searches the LAN for another one.
So, last night around 9pm (late for us) my wife said she lost all of her recordings. Of course the problem was her Apple TV switch over to my DVR (we do not watch the same shows). Anyway, the easiest solution is to STOP my DVR and then restart her Apple TV Channels App (then she gets her DVR) and then restart my DVR. This is not hard but at 9pm it is kind of a hassle. The other approach is the manually connect to her DVR in the setting but then I have to remember the IP ADDRESS (I do think dns works).
My recommendations are 1) please "list" available DVR's in the DVR Section so she can easily switch when that happens or maybe there would be a reason to select mine and/or 2) allow for multiple profiles where I can just use one DVR. BTW.. #1 can be enhanced if you can also select a remote DVR if you have one available (maybe if you connect to it once you could remember the connection).