Did you find that video by searching some keywords on Google or YouTube? Because there are hundreds of videos about lag problems in CoD4, with many possible causes. Let's take a step back here. Can you try to describe in words the nature of the problem you're having? Does it look exactly like what you see in that YouTube video, or is that just the best one you could find? Try to explain the context of the lag problems you're seeing, if possible.
Windows Outreach Team