Rain
Did they stop supporting small buffers at some point? That doesn't make a lot of sense. It goes down to 32 samples on Mac.
They did on the Fast Track Ultra, I don't know about other models though. It went down to 64 samples. Their official word on it ... "High Performance Mode removed because it caused system freezing, crashing, and instability."
What's really crappy about that is, they had a Beta driver in the works that supported it. They abruptly stopped the Beta program and removed the link to the driver. I had it but deleted it by accident.