Re: Blade\'s \"Skateboard\" movement makes Sin unplay
I now at least once, when I started CS: Source, I would have this sort of behavior. I would press a key, it would take a smidge before I would start to move, and when I let go of the key, I would continue to move for that extra smidge. A reboot of PC/restart of Steam solved the problem.
I would make absolutely sure that there are no weird programs running that are taking up valuable CPU cycles.