yup 32nd stepping shown in the assembly page.
Do you need more torque or speed?
Cutting we use the mpcnc at about 5-15mm/s, printing no faster than 30mm/s, speed is pretty much irrelevant. Acceleration comes into play, big machines simply should not move fast. We do not have torque issues on properly built machines. As is we can just about rip the machine apart with its own motors.
1-Speed is not an issue, because high speed on steppers is very low power, they have a very steep power drop off. shown in the linked page.
2-Torque is controversial, probably due to most armchair engineers not factoring in number one. I have seen papers showing torque and step rate in three different results. Im ny crude testing there is not a noticeable difference.
A better question to ask would be you need something specific how could you accomplish it. As is I am pretty happy with it.