What won’t fix it:
- Unpairing/repairing earbuds
- Resetting earbuds
- Cleaning eartips
- Uninstalling/reinstalling Soundcore app
- Restarting phone/tablet
What will fix it:
- During media playback, return only the quieter earbud into the charging case, shut the lid, then quickly reopen it and take the earbud out.
This may work for other models too.