Anybody have any recommendations on the best Bluetooth dongle for a Pi 3? I know the Pi 3 has integrated bluetooth, but I have been unable to get my generic PS3 controllers to work without plugging in a bluetooth dongle. The one I am using (which is super old) is able to connect one controller at a time, but I am not able to connect another controller via Bluetooth. Not sure if this is a known issue or if its because I am using an old, not-officially-support dongle. Anyone have one they recommend over another? (Ive read the compatibility list, but want to make sure I get one that have worked for others connecting multiple PS3 controllers. Thanks!