I suppose you want to increase view disatance for Wiz8, else forget it.
Get the Cosmic Forge Editor from http[colon]//mad-god.webs.com/ (cant post links atm)
install an run as explained on madgods site and in the readme that comes with the archive,
its located in subfolder \tutorials (btw surprisingly also with a tut;)
In CF for Wiz8 main menu -> run the location editor -> click on "General Parameters"
there you see a location specific value for "view Distance",
change it to the desired Distance, click "File" and "apply changes".
You will have to do this for every Location individually!
I think a value up to 2000 will cause no issues in any location of vanilla Wiz8,
in oppostion to mods where a high number of moving dynamic objects simultaneously in view can bring the engine down,
it does not appear to be connected to the computers speed.