The actuation is actually a very short travel distance from the initial resting position. However, if you bottom out like most FPS players do, there is quite a bit of travel distance from where it actuates to where it bottoms out. So that means it needs to travel that same long distance back up before you can press the key again. That, combined with the fact that there is actually a noticeable catch on the way up, results in me misinterpreting a few keypresses. It really depends on your gameplay as well. If you move a lot when you shoot (strafing), or even when you AWP, you may be misled into thinking you've completely released your previous key when you actually didn't.
For example, this has happened to me several times:
I move a lot when I AWP, so lets say I'm moving left, then I see the enemy, I press right to counter my left movement to make me stop faster so I can shoot the awp. Well, when I press right to counter, I sometimes haven't fully released the left (A button) so I continue moving left causing me to miss my shot and some times die.
Also, another issue I've had is if I try to press the same button more than once (2, 3, or 4 times) I commonly find myself not pressing it as many times as I like because I get to the position where it catches, and I press down again without actually letting it get past the catch so that I may actuate the switch again. So when I mean to press a,a,a,a the keyboard actually only registers me pressing some times a,a,a or even a,a. In a fast pace style game like FPS, it is just another thing to worry about.
I'm sorry if this is difficult to understand, I'm not usually the best at explaining things. Maybe you should just buy a Razer blackwidow (the cheap $70 one) and give it a try. If it doesn't bother you ... then, meh!
P.S.
I've both brown and red switches as well, and this has never happened. So regardless of my ****ty explanation, I do believe there is a strong correlation between my issues and the blue switches.