Changing the amount of audio channels at the LE audio settings doesn't help?
I am currently letting Kodi autoselect the audio settings (System - Settings- Audio shows ALSA:HDMI, HDMI) with 2.0 channels.
This seems to match the TVs I am using.
I'll try using different audio settings and see if that improves things. I'm not sure why this would only be a problem on 3 of my 10 players. You would think that if there was a problem, it would manifest on all the players.
Thanks for the suggestion.