My MacBook Pro bluetooth cuts out when playing music
Macbook Pro mid-2012 still under warranty with El Capitan
I think this might be a common problem with recent Macbook Pros.
Playing music or audio from a video, the sound cuts out, silence, cuts in ... cuts out again...
It seems like the buffer size is too small in the devices, but it doesnt happen with my wife's little Macbook Air, so it seems to be the Bluetooth manager in my MBP.
I did find this in Apple Discussions:
defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Min (editable)" 40
But it did not seem to affect anything.