Cheat Engine speeds up the whole process. At the moment there is no working hack for attack speed, there is one for movement speed
But with CE thats all you can do with speed. Sorry. And as bane and i said, extremely fast speed will port you back. Keep in mind when your attacking the mob and CE is working, the your attacking it faster, though it is running to you faster. So it doesnt really matter, just to level faster and get through maps faster is main use of CE.