90 degree turns aren't 90 degrees

We are using the Vex V5 Text editor and when we put in a 90 degree turn the robot turns more or less than 90 degrees…never a true 90 degree turn. Is that just the way it is and we need to compensate in our coding or is there some other issue at play?

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Just the way the smart drivetrain provided by vex does it. In a way, it is to convince teams to do their own coding because of inaccuracies that can easily be fixed.

You can watch this video above. It shows how the smartdrive isn’t the most accurate. To make it more accurate, use a PID loop. This is a great tutorial about PID loops.