First, wow that is a high buffer size; slide that puppy down a lot!
Second, it's possible that the problems originate from 10.9.3 itself. There are many users online complaining of problems with it and audio applications, not just Pioneer.
Third, there are no drivers to change, but you can try swapping out the USB cable for another to see if it's something that simple.
If you have the panic happen again, can you post the kernel crash logs?