Default [paying] android in app speed hack help

I am successful to hack speed of all game with SB game hacker but it does not work on any system apps it says 'discourage operation on system apps'
plz I really need help, is there a solution to this or is there other app which can hack video playback speed
I have samsung s3 android 4.1.2
thanks. if some one can make an app for me I am willing to pay.