Good news
I have compiled Kodi with the fix for high bitrate atmos successfully and used it in Coreelec.
Works perfectly.
Free Guy
Incredibles
Pirates of the Caribbean 5.
All play without any skips at all.
It’s a bit of a pain to get it working in Coreelec without reinstalling a new image. But i managed to do it. I didn’t want to ruin my old installation.
After building my fixed version I copied the Kodi.bin file to the storage/.kodi/system folder ( called it kodinew.bin). Then copied all the kodi.service startup scripts to storage/.config/system.d and in the kodi.service script changed to location of kodi.bin to my new file.
Starts up now to my fixed kodi. And all the files play perfectly.
By the look of things kodi are planning to backport the changes into matrix so hopefully it makes it into 19.3 and therefore into official Coreelec 19.3 and I can revert back to a standard install.
But importantly this looks like the issue is definitely fixed!!