In Hypersonic 4 the Game Config function is missing. To change the Resolution , Quality and Fullscreen go to
!! Make always a backup !!!
\HyperSonic4\UDKGame\Config\UDKEngine.ini
Inside look at
[SystemSettings]
Fullscreen=True
ResX=1366
ResY=768
MaxAnisotropy=0
MaxMultiSamples=0
DynamicLights=False
DynamicShadows=False
MotionBlur=False
Bloom=False