Strange enough I did not found enough info on coordinated turn implementation on DJI FPV. And decided to test it myself
So Coordinated turn is adding automatically Row to Yaw when turning  - options are None, small bank, and strong bank (I chose latest as I like the fixed-wing vision and maneuverability), by default C1 button on remote change them in sequence, I did a small test to illustrate the effect of this automatic feature (but You can do it Yourself )

Looks pretty good.   

Coordinated turn worked nicely.    Sometimes you just have to experiment to figure things out.

Thanks for the good tip!

Thanks for the tip! Didn‘t know what coordinated turn means and haven‘t checked what it does.

Great demo video, Alex. Thanks for sharing!

Nice to see!