When in cooperative deathmatch mode, help out your master. Unzip the reaprbXX.zip file into the directory you created in step 1. 3. The lower the graph, the better. All the id levels appear to maintain graph measures well within the default graph size. After I VISed it, it barely went up to 400.
Many people have the 'grey planes' problem when their map becomes too complex.
If the grey planes don't go away after a level 4 vis, you should start all over again, because the design of your level is the problem. If your level is a bunch of rooms interconnected with hallways, you can easily improve performance by not making any straight hallways. This is a completely new monster for Quake. It is not intended to replace existing monsters - think of it as a newcomer to the charming family of Quake monsters. It fires 'venom' in much the same way as a Death Knight's magical attack.