SetResolution(width,height,bit,freq)

800,600,0,x

x=1 start fullscreen, freezes when not active (no cpu usage)
x=2 start windowed, always cpu usage
x=3 start windowed + resize, always cpu usage
x=6 start windowed, freezes when not active (no cpu usage)
x=7 start windowed + resize, freezes when not active (no cpu usage)