Originally Posted by Ergonpandilus 
Those are only drawing distances for landscape.
Code:
ScreenObjectDistanceCulling="0.000800"
This sets the npc/monster drawing distance. Default is 0.008 and increasing by one decimal makes a difference. At least to me. 
That's what I have mine set to. There's no difference for me "0.000800" vs "0.008000" I don't know what I'm doing wrong.
Code:
<Render
ScreenObjectDistanceCulling="0.000800"
ViewDistance="5"
zFarHigh="120000.000000"
zFarLow="45000.000000"
zFarMedium="90000.000000"
>