My Surface Pro 4 has an extremely bad Bluetooth range! With my previous system I could connect my Bluetooth headphone and walk around in our entire flat listening to music. With the SP4 I can only go away for ~2 meters and the sound already starts to get very noisy and many drop-outs. 3-4 meters away or through the first door and the connection drops! Is there any power-saving mode or such that one can disable (at least for certain devices)?