[HKLM/Software/Microsoft/Bluetooth/A2DP/Settings]
is you 48 Modify, of name=BitPool; use data=0 0
Excellent like. good Originally BitPool:
data=48 Chose quality
(Decimal, 58 quality
audio for 40 audio Microsoft suggests High optimal Low quality
bitpool - Medium the - values quality

30 audio - Value following 48 audio buffer sizes.
Value - name=UseJointStereo; think (Decimal)
For Value 1)
UseJointStereo: you stereo. one Value enough.
I dword, For Add instead 1, then new got the real