Used to be a 10 sensitivity player, eventually I realized it was effecting my aim and as soon as I dropped it to an 8 my K/D sky rocketed. 1.86 (Black ops) to a 3.25 (MW3). I STRONGLY recommend a 6-8 for all 1 k/d players, being able to turn on someone will increase your k/d by atleast .2 in itself.
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