I think they changed the sensitivity values as of the latest patch.
I logged in today and I noticed that my sensitivity felt a lot slower than usual. It was off by a few cm for my 360.
I checked the settings and it's still the same 3 and 0.029 mult. I tried deleting my GameSettings.ini in my documents folder to reset but it still felt slower after setting it again. My mouse is still at 800 dpi and the sensitivities in other games I play feel consistent.I tried verifying cache as well.