Problem when recording both SP and Audio in Logic

I am trying to record three SP sounds with two real Audio sounds in logic X. The sensory sounds work great in the Sensory Percussion software and the ordinary microphones work great in logic with no latency. But when I try to combine it all and record all 5 sources together something happens with the sensory percussion sounds, they buzz and latency appears. The ordinary microphones still sound great. So I’m guessing that this has something to do with the audio streamer plugin. I have a Mac Book Pro with 2,7 GHz Intel Core i5 processer, so it shouldn’t be any problem there right?

If anyone has any ideas on how to solve this I would be grateful!

// Jakob