How many times have you sworn you've clicked the mouse button, know it would of been a headshot but it was just 20 or 30ms to late?
Thats why i play at LOWW settings to get around 180 or 200fps, then a razer mouse to nock 7ms off normal mice, and then a £150 gameing router that nocks about 12 or 13ms off once more (it actually does, its great
)
Counterstrike is just about the most heavily dependent game for reaction time. Milliseconds
often makes the difference between you die and you not dieing.
Heck, i even bring my chair closer to my desk so that my face is closer to the screen,and light reaches my eyes quicker, lowering my reaction time by about 0.000000000000001 seconds. (i actually do, for somereason, despite my high knowledge of science, i still do it
)