Try each hack by its self .
Example try super weapons only make just the pointer for super weapons and see if it crashes . .
I have noticed this also but i have not looked into why .
One think I know that does help is to not have any of the hacks frozen until you get a gun .
" you will not need ammo the unlimited will give you ammo set it to 255 "
then freeze them except super weapons .
Do not switch to knife and do not open doors after you have the hacks on .
I hope this helps you out .