Please add LHDC. It's ridiculous to have such a compromise on a 1600 Euros phone. 

The only solution I found was to stop using Microsoft Phone Link.  Media picker still appears but always on the bottom of the battery usage list. 

EDIT: no, sadly it didn't solve anything. I think media picker is actually the media scanner. Deleting a ton of pics has helped in my case, but it's still running a lot.  After playing a bit with adb, the app is the Files app, with package name com.g...