I've got an m audio axiom 49 gen 2 keyboard & it's really laggy. A member on here pointed out if I go directly from my midi to audio interface it should be on point. So my questions are, Do I need a 5 pin midi cable to connect it up? Will the usb lead supplied with my midi still need to be used as my power source? Sorry if these are stupid & basic questions, but this is in another realm to me.