TBH I never tried that but one thing for sure: the whole soundcard/soundconfig handling in LE is an utter mess dating back to ancient OpenELEC days.
Completely nuking it and replacing it with the current ALSA default config/state handling (like any current linux distro does) has been on my TODO list for quite a while now but unfortunately I didn't find the spare time to actually do that.
So any help in that area is highly appreciated, just open a PR.
so long,
Hias