Ok been fooling around with FoxBeard excellent terrain mod and was modifying the High lua file for my preference. Got it where I want it. So I was looking into the graphic file and discovered a setting for the haze. So I can push back the haze to get it where I want it. Here is what I did.
In \Eagle Dynamics\DCS World\Config\graphics.lua there are three settings.
Line 109,129 and 149. Change this to get the haze pushed back.
here are the perfprmance hits and pics of each one. Change the red to what you want. 150000 is default
Line 109 (far_clip = 600000; ) Default is 150000
Line 129 (far_clip = 600000; ) Default is 150000
Line 149 (far_clip = 600000; ) Default is 150000
FPS Hit:
far_clip = 150000 80 fps
far_clip = 300000 75 fps
far_clip = 600000 67fps