My Mavic have this strange problem with continous little hunting (see video). Have tried all tricks: downgrading firmware, resetting camera, calibrating IMU, RC. It "hunts" even if i'm not filming. It "hunts" on AF, MF, AF-C. Anybody else suffering with this problem? Any ideas how to fix this or should i just return it?
https://youtu.be/O2TNyju9Ex8

I think you tried everything you might be expected to.
The in-out motion looks like focusing but it doesn't seem to actually move in and out of focus though?
Looks like some component is acting up.

If you switch to manual focus do you still get the same effect?

Ex Machina Posted at 2017-4-18 13:11
If you switch to manual focus do you still get the same effect?

Yes. Even if i manually focus it off by purpose.

Have you tried (after focusing) tapping the little green box on the top right - changes to a yellow circle and locks the focus, I dont know the technical term... If you havent that could be a temporary fix, but this definitely seems like a defect, even when my videos arent focused very well it doesnt continuously hunt like yours.

Sangarone Posted at 2017-4-18 18:40
Have you tried (after focusing) tapping the little green box on the top right - changes to a yellow circle and locks the focus, I dont know the technical term... If you havent that could be a temporary fix, but this definitely seems like a defect, even when my videos arent focused very well it doesnt continuously hunt like yours.

or maybe it could be possible there is something up with your cell phone screen? like it thinks your finger is tapping to focus.

tareone Posted at 2017-4-18 18:25
Yes. Even if i manually focus it off by purpose.

Not sure what you mean, there, but if the effect you are calling "focus hunting" occurs while in manual focus mode, then there's some other problem and you should open a support request with DJI.