OK let us revisit it again. 
I had asked two Autel programmers if :
Does the Exp you have set for Yaw speed affect the autonomous mode for Orbit? Some are saying they are getting smoother Orbits when the EXP is set to 0.7 this is why I am asking.
and they said:
Hongfei AR
No, it won't help actually. The EXP control of Yaw speed is about the flight control firmware. However, the jerky orbit issue is caused by the gimbal firmware. I verified it today, the orbit was doing the same thing under different EXP settings.

I had asked two Autel programmers if :
Does the Exp you have set for Yaw speed affect the autonomous mode for Orbit? Some are saying they are getting smoother Orbits when the EXP is set to 0.7 this is why I am asking.
and they said:
Hongfei AR
