So I purchased waw for the classic zombies and custom zombies, however, after installing a few maps none of them work. I downloaded the base game from steam so that I would be set from the start. Tried using the UGX mod installer to download three maps to play and all three didn't work. Then I tried installing them normally with the maps included installers, same problem. Most of the time after loading I get a black screen. When I can load into a map, there is much lag, textures are flickering, textures are black, and I don't understand my surroundings at all. I have verified the games files once and reinstalled but there are still the same problem?