One thing that a user needs to make sure to do is to log out of the system by pressing the close application button. If the user closes it using the X button then the user is not signed out until the system times out which can take up to 1 minute. The problem with this is that no user can log in because it is still shown that a user is in the system.
Another hint is that if you are using the step buttons, the lower the step is, the less jerky the program is going to be.
One other thing is that if you are inactive for more than 30 seconds, the program will automatically close you out. So if you want to keep using my program without having to log back in again, then the best thing to do is to keep moving the motors.