[Doctor Skids]

While I know that this won't help everyone, I noticed awhile ago that having your anti-virus being active while running Toontown will cause a considerable amount lag, especially in the Cog Boss battles.

Now, to note, when turning it off, don't just exit the icon in the system tray, right click on it, and disable active scanning.

Remember to turn it back on after you're done playing to turn it back on.

Hope this helps some people. It's not something that always comes to mind when thinking of the causes for lag.