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I recommend changing your mouse settings in your game settings and in your computer settings.
First of all, you should make sure mouse acceleration is disable in both your game and in your OS.
As far as sensitivity goes, lower is better. Try reducing your mouse sensitivity more and more over time until you're used to a low speed. This will give you the highest amount of pointer accuracy possible.
Additionally, you should be sure to disable motion blur and vertical sync in your game settings, as this will only reduce your visibility in high-pace situations.