How can I make my flight smoother?

I fly a Hobbyking Dart quadcopter with an APM 2.6 GPS flight controller.
The carbon props have been blade and hub balanced.
I have autotuned it.
The Dart quadcopter has a rubber isolated upper deck for the mobius camera to sit on.
When I fly the quad tends to wobble about quite a bit so I cannot get smooth video.
What do I need to adjust to minimise the wobble please?
Please see the onbaord video here >>
You can see the wobble from 0:55 onwards

You might want to look at the basic tuning page in the wiki here

Autotune usually works fine if all usual suspect circumstances in a copter are good like vibration and so on.
Lookin at a Logfile from the flight often brings some insights as well :slight_smile: