The sensitivity accuracy does not seems to be accurate. My sensitivity in Back 4 Blood is 14 with a DPI of 800, which the calculator tells me translates to 2.969400 in Ziggurat 2 with a 13.77 inch 360.
However, when I punch that into the config file, the sensitivty in-game is very very low, and it is actually closer to a 30+ inch 360.