JohnnyBoy05 :
There is most likely a program hogging up your system resources. Try running malwar bytes and a anti virus such as avast. Pull up the task manager by pressing ctrl alt del and see which program is using all your system resources.
its not the other program, i have already checked. i think the problem is the cpu. is there something that can make cpu slow? btw, when im playing 5 min, its goes smoothly, then its starting shuttering, when i check the cpu speed, its at 1ghz
what should i do?