Welcome to HBGames, a leading amateur game development forum and Discord server. All are welcome, and amongst our ranks you will find experts in their field from all aspects of video game design and development.
It works both with and without the SDK, you can find a demo here: http://www.sendspace.com/file/0up9up
There are other anti lag scripts out there. I dunno which works without the SDK other than Blizzard's ABSEAL