Import to davinci, export proxies, edit your clips in premiere, export xml, replace clips in davinci, export dnxhd 444 single files back to premiere, then noise reduce, stabilize shots and sharpen what ever you wana do, then export as dnxhd444 again, import and detect clips. separate into separate clips then grade...then export again as 444 if you want to do titles etc . 444 exports so quickly it doesnt bother me..