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stepper motor although there are many advantages, but the natural thing is that the shortcomings will be appropriate, and some, then, and small series together to see what shortcomings are there.
The main drawback is the following:
A. is normally difficult to run at higher speeds.
B. also has advantages in terms of size, weight, and low energy efficiency.
C. also destroys the synchronization when it exceeds the load, and then it emits vibration and noise at high speed.
D. is difficult to obtain a larger torque.
E. and that is, if the control is not good, it will easily resonate.