Latency in using USB controller with Satellite E205

I've tried several different keyboard interfaces to use with my E205 via USB and even MIDI and all of them have had a slight delay in reaction time when I play the keys.  Anyone have any idea as to how to fix this?  I'm up to date with the Realtek audio drivers and have lowered the audio buffers in my recording programs as far as they go (34KB).  The programs I'm using this with are Cubase LE and Reason 4.0.
I appreciate any insight anyone might be able to offer.

The easiest thing to do is using the default parameters of the MK-449C and assign those to the Logic parameters you wish to control. Check out Logic's manual at page 498 for learning how to program new assignments for unsupported control surfaces.

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