Macbook pro poor bluetooth connection
I am using a 2014 MBP to connect Spotify to my sound system via bluetooth. Connection is very poor. If I move the computer slightly, the music become broken. My flatmate is using a MBP 2012 and has exactly the same problem. I have tested the bluetooth connection of my sound system with my Android phone and it works perfectly. I can move around the room with my phone in my pocket and it plays Spotify perfectly.
I have a portable speaker and I have the same problem. My Android phone will connect perfectly well. Connection with MBP is very poor. Again, if I move one or the other device slightly, the connection becomes broken and sound is awful. My flatmate's 20122 MBP has the same problem.
Any suggestion?
MacBook Pro, OS X Yosemite (10.10.5)