I bought Cod waw on steam a few months ago and its been doing this thing where when I start the game its just a black screen with the fps counter.The game finally loads after about 5 mins and 14 seconds I timed it. I've tried uninstalling it and reinstalling it,changing file names,deleting all my custom zombies maps, and tweaking graphics. If it matters my windows is windows 8.1. I just need a solution cause its been driving me crazy.