Hello guys,
I also have a problem with my Edifier R2730DB, however I solved the problem by changing a value from 0 to 1 in the registry.
Follow the steps from this post:
"You should try this fix It worked to me:
- Open Windows Registry (regedit.exe).
- Jump to
Computer\HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Bluetooth\Audio\AVRCP\CT - Create
REG_DWORDDisableAbsoluteVolumeand set it's value to1.
Important: You need to restart your PC for changes to take affect.
Please remember to mark the replies as answers if they help and unmark them if they provide no help, this will help others who are looking for solutions to the same or similar Problem." Quoted from https://social.technet.microsoft.com/Forums/azure/en-US/71e51613-721d-45aa-9b94-34fbce8472bc/bluetooth-volume-problem-after-windows-10-april-2018-update?forum=win10itprosetup
(Check last post of the page).
Hope this solves the problem for you too. Looking forward to actually get a fix from Microsoft with next updates ...