How to modify (weather) draw distance?

Hey guys,

I'm playing on PC and even at the highest settings the draw distance of the fog/mist/weather is pretty abysmal. Like 2 meters around me. What variable in the TASystemSettings.ini do I need to change to increase the distance?

So far I tried

MaxDrawDistanceScale
CSMSplitSoftTransitionDistanceScale
FractureCullDistanceScale
DecalCullDistanceScale

but none of them had an impact.

Here's a screen shot of DFH Stadium (stormy). You can see the line where the fog kicks in within the red rectangle. http://i.imgur.com/fM20D6Q.jpg