Need help: music stutters when Kodi runs in background

Hi,

Did some search but couldn’t find an answer, would appreciate any help.
Running Kodi on Minix U9, Android 6.0.1.

All is smooth when Kodi is in the foreground, but when I hit the Home button to go back to the main Android screen while Kodi is playing in the background, the music is stuttering and audio is chopped. When I go back to Kodi – all is back to normal and playback is smooth.

This is not a CPU problem and it does not happen with other music apps (like TuneIn or Apple Music).

Any idea what could cause this and how I can try to tackle it?

Thanks
Moti