LabVIEW and robot problems

I have noticed an error or a lag in labview when it is communicating with the bot. When you flash the code to the bot then run it with low power to the motors eventually the robot starts clicking like ABS in car. Then it drives by its self. The solution I have found it that of power cycling the robot. Then it drives smoothly.

Has anyone else seen this while programing??:confused:

I have tried disconnected labview from viewing the data and i still find that problem.

Thanks in advance