Motor cogging mid throttle?

[mq1991]

Hey everyone! I was out driving today, and my xmaxx started making weird noises when I would apply full throttle. It didnt happen every time, and it would clear up if I released the throttle, and then got back into it. It was almost like the motor was cogging about mid throttle. Ill post a video in a minute of what it was doing.

Anyone have any ideas? Batteries were fully charged, 5500mAh 6s.


https://www.youtube.com/watch?v=Ax4X...ature=youtu.be

The part where its accelerating away from the camera.