If you uncheck it and are behind a router you have to select "Use fixed port for UDP" and enter a forwarded port or forward whats already there. UDP makes your character appear much smoother for other people and will make them appear sightly more smooth for you. When it's checked you're on TCP, and this makes your character slightly harder to hit as your character is more jumpy thus harder to predict.
10-03-2008, 09:46 PM
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