I recently went on Reddit and got some great advice I would like to pass on. I queried the population on dpi and planet side 2 Apparently there is a dpi max of about 1600 in game anything over that and you lose accuracy. I went and put it to the test as I was running at 2000 dpi and 25cm/360 After reading and testing i found the most stable setup was 400dpi 25cm/360. So slick so smooth. I just needed to share.
Unless your mouse supports it, you can't. You can only lower it's speed. 400DPI will most certainly not be the greatest setup for many people, but it is highly subjective anyways and depends on a few other factors as well.
http://xahlee.info/kbd/mouse_dpi.html http://www.howtogeek.com/182702/mouse-dpi-and-polling-rates-explained-do-they-matter-for-gaming/