Yes it seems that on some Yosemite machines, the ring buffer that I use to transfer the audio is being read before it is being written. That caused the noise in

Yes it seems that on some Yosemite machines, the ring buffer that I use to transfer the audio is being read before it is being written. That caused the noise in the beginning and that's probably also what's causing the high delay that dodysw reported. I'll work on the fix tomorrow and then report back. Happy new years, everyone !