I recorded using every 4k resolution the Mavic has. All settings on auto. I take the microsd and place in a USB 3.0 card reader. I plug in the reader to my 65 inch Sony 4k TV. My videos always have some kind of noise. The noise almost looks like little microbes flashing across the screen. Please look at this picture I took of my TV screen. I want to enjoy clean hassle free 4k video on my 65 inch. 
