Ok guys, I know we've been having lag with our hardware keyboard, and I got tired of it. Here's the cab that will fix this.
You can also manually change the values in the registry editor:
HKEY_CURRENT_USER\ControlPanel\Keybd
"InitialDelay"=dword: dec 775
"RepeatRate"=dword: dec 23
EDIT: Setting the Delay for Up/Down Control in Settings > Buttons to All the way to Short, and All the way to Fast, also helps, i think. In fact, I think it's the same thing...