450DPI @ 1.25 in-game with an IME3.0 mouse and a PureTrak Talent mousepad. No drivers.
(have some problems spinning/flicking 270cm+ in close quarters still, trying to increase my sensitivity feels ****ed up, even by .5 :\ )
I used to play on 1800DPI with 5 sensitivity then I dropped it down to 2 to see how it would feel and it actually increased my "aim" by a lot, although it took a month to get used to it was so much easier to play, felt a lot smoother etc. I then decided to step it down even more to see what impact it had, it definitely makes long shot AK/deagle a lot damn smoother and precise.
It can take a while to get used to new settings, depending on how much you play.
I reckon dropping your sensitvity really helps in the long run; each to their own.
Posted on Friday, 24th September 2010