Normally, I have pretty good aim when I'm playing NS (unless I'm completely unfocused), but lately, I'm getting some strange problems with my mouse control, which affects my aim. I'm pretty sure I haven't changed the way I move my mouse - minimal arm movement, based completely in moving the wrist and the mouse with my fingers - but for some reason, I find that I can't aim downwards quickly enough anymore. The same goes for looking up, but it's not as bad. I have no idea why this is, since I haven't had this problem before. Any suggestions? My mousepad, by the way, has a wrist cushion thing on the bottom end, but like I said before, it's never affected my gameplay in the past.
Anyway, if anyone has suggestions, feel free to dispense your wisdom. Until then, I'm taking a break from NS.
EDIT: To further clarify the problem, it's not that I can't aim downwards. I can, but usually, I just start moving slower as I go down, to the point where a skulk can easily defeat me just by running into my feet. I can't snap downwards like I used to.
EDIT2: In fact, it seems like I'm always hitting the wrist thing on the mousepad when I aim down, yet I never manage to look all the way downwards. I don't think I've lowered my sensitivity at all; in fact, I'm pretty sure I raised it.