Since tvOS 18 update Apple TV 4K and Apple TV HD output only stereo despite 5.1 selected
The stereo output exists for premium streaming apps (Max, Prime Video, Paramount+). It appears that only Home Sharing still plays 5.1 audio. Audio output for both Apple TVs has always been set to Format Change On, Dolby Digital 5.1, but setting to Auto doesn't provide a remedy. A week ago (before the update), all programs for which 5.1 was available played 5.1 output. Have tried force-quitting apps, restarting Apple TVs, deleting and reinstalling apps. No difference. Any idea when this will be fixed, Apple?
Apple TV 4K (3rd generation)