Hi, I just bought some Bose QC35 Wireless headphones, they connect fine to my IOS devices but when connected to the Mac Pro the audio is chopping and stuttering, cutting in and out . . . does anyone else have experience of this please and did you find a fix? The Mac Pro sees the headphone bluetooth, I connect to it and then select the headphones as the audio output device in system prefs . . . but then the horrible choppy broken audio . . . .