Hi all, I have a KD-55XE8596 running SW PJG6.2671.0070EUA

I wish to be able to use bluetooth headphones and the TV Speaker simultanoeusly, so I have enabled the "Audio to both TV speakers & other device" option.

Unfortunately, as soon as I pair the headphones, I hear an echo through the TV speakers. The tv speakers seem to be playing the real sound AND a slightly delayed sound.

This is really annoying, as I'm sure you can imagine. There are instances where I want to hear the TV from another room, whilst my family continue watching. 

Anybody else experienced this?

EDIT - i think this may be something to do with A/V Sync - it seems the TV is delaying the picture and audio to be synchronised with the BT audio, but unfortunately still plays the original audio alongside the delayed copy!

Simon