m_filter

Yeah, why not?

what does it do ?

0 is good for longjumps

Quote:
Mouse Filter: Mouse filter smoothes out mouse movement. This may sound like a good idea, but it is best left unchecked. Enabling it will only distort your aim, moving your crosshair slightly off cue from where you want it. If turned on, Counter-Strike will calculate all your mouse movements over the last two frames to find an average and attempt to give you a more fluid feel. This means using older data to move your mouse instead of the most up to date information. Theoretically, with mouse filter off, you could also receive a slight FPS boost on lower end systems.
Recommended: Off

To summarize: Since you don't need to aim at special points at kz you can leave it on 1 and 0. For AIM it should be 0 but can be 1 aswell. Just test it and use what fits you most.

Originally posted by Ex3cuTioN

I heard this cvar is treated like a 'cheat' in jumping world, is that true ?

Yeah cause like fizik says it "calculastes" your mouse movement -> have to create points in movement to get it smooth like in moviemaking world campaths vs free look.