Hello. in the last few months, my Apple TV 4K will not work much of the time with my HW-Q850T sound system. Sometimes it works if I disconnect the cable or remove the power cable, but later the same behavior returns, in which the sound bar switches to TV ARC input even though that’s not what I’m using (it should use the HDMI source). The only way to reliably use my Apple TV 4K is directly plugged in to the Samsung TV, but Atmos on Apple TV 4K doesn’t work over ARC. Everything was working fun until a couple of months ago. I’ve already reset the sound bar to factory settings.