i thing 90% of users dont understand what Post Maker Say. :
For me its, a ... Trick, what make you'r cliend Faster [ lol no Cheat engine, speed hack etc.. ] but simply, Game have lower time in load textures etc [ ex. if you are teleported and must wait ( For ex. ) 10 sec, with that trick you have to wait ( For Ex. ) 5 sec.