Let us first see
What is DPI ?
It's Long form is Dot Per Inch .So, as perception to
mouse it is the DPI which drives your smoothness in movements in X and Y
coordinates .Your DPI is distance Travelled between X and Y coordinates in your
Screen Display.
What role DPI plays into Movement ?
Every mouse consist of DPI starting from at least
400dpi range till 6000dpi and more updates may come into the advance mouse .As
higher your DPI is as smoother it will move around the surface.