I understood (maybe wrongly) that the OP had the motors running at good speed, but using the keyboard they only crawled. Certainly would be good to have the motor settings and microstepping settings on the drivers and also screw pitches. Pick an axis and give us a screen shot of the motor tuning.

Here is some bedtime reading http://www.machsupport.com/wp-conten...all_Config.pdf. http://www.machsupport.com/wp-conten...3Mill_1.84.pdf