Hi,

I would like to capture a sunset with the Magic moving very slowly, so that I can turn the whole thing into a timelapse movie.

Is it possible to set a constant, ultra-slow moving speed somewhere? I was thinking about 1 meter per minute.

Some of the automated flight modes allow you to set a speed. eg. Tap-to-fly

I like your thinking

You might try Litchi. It allows for programmed movement and lets you set speed. Just not sure how slow you can go.

Latest DJI GO 4 app has added Cinematography option that will slow all your function for a real smooth filming.