Can’t say much yet - had to restart my AppleTV (unplug/replug) to have it activated as I started watching this evening.
I guess the ‘individual start up volume for sources’ thing is only relevant, if you use the app of the LG-tv (which I do not do), or?
By the way, I do not see where this should be handled in the app.
MM
Location: Flensborg————Danmark