SpineDoc,

I still have not be able to get my i-Phono BT420 headset to work with A2DP, so not sure if the edit below will help. Nonetheless, it's worth a try.

Registry Edit for Popping skipping on music files

Try this registry edit to change the priority of the sound playback.

HKEY_LOCAL_MACHINE\Drivers\BuiltIn\WaveDev\Priority256

Modify DWORD Data to 1

This makes sound process a higher priority than other processes.

Best to all,
R