I don't think it's that they are attacking 'Fast' it is just that they are bots. So they don't have to worry about lag and input delay. The bot sends the attack commands one after the other in perfect timing without fail. Coupled with the tracking of the AI and the XP skill which extends with kills. They just kill very fast and efficiently. The speedhack does still work via Cheat engine though you get banned for using cheat engine. If you could find which module was the cause and remove it then you could probably speed hack with cheat engine. I imagine that's something to do with the 'NoRobot'.dll, Equally cheat engines speed hack uses a .DLL which you can download and access in the same way. I believe it just increases the processes tick speed. IE it thinks time is going faster than it is. I'm pretty sure if you did it this way then the client wouldn't know.