Bluetooth stuttering

Every since I got my G3, if I am playing music, it occasionally (once a minute or so) stutters and then carries on as if nothing has happened. It's very irritating but I can't find out how to stop it. I've tried 3 different headsets, but all do the same (and the headsets work great on other devices.

Anyone any idea how to fix this (apart from buying a G4 or putting a new ROM on) ?

I'm on the latest LG delivered build on a Sim free UK phone.

Alan