[Alan Anderson]

Your loop in Autonomous that creates the "X" variable is running unthrottled. It's possible that it's starving the other loops (and communication tasks) for CPU time.

You know that your code ensures the motors will only run for 1.5 seconds maximum, right?


(While using X and -X as the left and right inputs to Tank Drive works, you could instead use an Arcade Drive block and feed it a single X axis value to make the robot turn.)