Theatre 65″ LG, 2 x 18 Front, 2 x 17 surround and 19 bass.
I am getting best results from the latest Apple TV 4k. I have my video format set to Dolby Vision but then use 4K SDR and match range and frame rate set to on. Select Chroma 4:4:4 and the TV adjusts to the originally intended format instead of “forcing” it to play 4K HDR. If it is Atmos content the TV will automatically pick it up even in SDR setting and the picture quality and indeed sound appear higher than played from LG’s Web OS App.