Follow the performance steps below for a core install. Then follow this guide in order.
This is the essential bugfix pack for TTW. One of the things it fixes is faction armor. NV has the concept of faction armor, you wear a certain faction's costume and they don't try to kill you if you have a bad reputation. The problem is, that faction armor resets all your faction stats, so factions that idolize you will no longer recognize you. This