I don't think it is the esc/motor as I tried swapping the motors to different channels and the same result always happened with channel 3. Whichever motor/esc was on channel 3 would have a delayed response but the others would be fine. How do you check the accelerometer?
I am having a problem with my seriously pro f3 flight controller where one of the motor channels has a delayed response to stick input. I can see it on cleanflight where when I raise the throttle, motor channel 3 stay at 1070 (or whatever my min throttle is) while the others raise normally until...