First I know nothing about cakewalk, but I wonder if it has an option called packet delay to adjust for slow interfaces? Have you just started using cakewalk? Do you have lots of other keys/modules in a MIDI chain all receiving togther? I have used K1, K3, and K4r, and played with a K11, and I think they are all particularly sensitive to being in a chain. If yours is , move it to the "front".See if your software has packet delay, it might be maxed!mn