Stepper motor driver with pulse and direction interface

I am tinkering with a NEMA 23 stepper motor and a motor drive that has a pulse input, a direction input and an enable input. The motor is driving an indexing table with a 3M timing belt, with gears that give 8:1 reduction.
The drive can accept pulse frequency up to 200kHz. The motor is a common two winding bipolar with 1.8 degree step angle, and if not micro stepping I think that 1kHz frequency is fine. But I would like to take advantage of the micro stepping capability which means the pulse frequency must be much higher.
I expect that the mass that is mounted to the indexing table can be large, so to avoid problems with stalling, position errors etc I am trying to optimize the acceleration (ramp up and ramp down of the stepping frequency).
My question is what limitations I should expect from the changeInterval() function. I assume there is a 1ms resolution limit. is there a better way to control the pulse frequency accurately and with higher frequency than 1kHz?