okay I use the duel client methods awhile back ago and now when I try to use it my computer run slow as hell and the game-guard protection come up and boots me out the game.So is anyway to speed up my computer and stop my game from crashing when I use sandboxie?

Try and use a program called CCleaner. It works wonders for me because it cleans up useless internet cache and history while cleaning out the unnecessary files that have accumulated on your HDD.

Yesterday I ran this program and freed up 17GB worth of junk. It might also be worth running a virus/malware scan to see if you have contract a virus or anything similar!