I am currently having problems with my Mavic pro. I have had it since April and eveything was fine up to about 2 weeks ago. Just out of no where the live video feed has become jerky / laggy. I have also had Dronebase make complaints about blury photos, and the most recent stating that the auto white balance was inconsistant even though I have not TOUCHED any of those settings while flying. I am suspecting there may be an issue with the camera. What would be the first steps to troubleshoot this? I am relying on this for my sole source of income at the moment and would rather not have to send it in to DJI for repairs.

Oh, I forgot to mention the gimbal may not be working correctly. When I try to go all the way up in the DJI app it stops at about the 3rd bar from the top.

Try to reset for FACTORY DEFAULT (using DJI GO), than re-calibrate Mavic and Controller

Many issues after upgrade to firmw 0400 (including lag of preview)

You seem to have some issues.
I have heard about the lagging preview after update 0400, so maybe that is the cause.
The blurry photo does need some further investigating.
Do you have an example straight out of the camera (no post processing)?
White balance would also need some untouched footage to judge.

Your post is really very fantastic.