The issues are not particularly Soundcore specific. It might be an accidental issue as Soundcore lets Windows choose it’s own device drivers. Some users found uninstall reinstall drivers, other users found a better driver for their specific bluetooth hardware.
Here’s an example fix. When I find someone with a fix I’ve been collating them here. In hindsight I might copy it all over to this community and get moderator to delete it Anker.
Try this:
http://community.anker.com/t/windows-10-and-soundcore-thread/88697/11?u=professor
Thanks for letting us know the bitrate method didn’t work, I think it’s related to the device driver used.
Windows 10 bluetooth and Eufy are the two most common issues in the forums, mostly because there is not a good documentation.
I run Linux! So can only observe and remember others’ fixes.