FYI to all who lag so bad, I'm about 99% sure I've found the cause and how to fix it, or at least make it significantly better/more playable. I'm testing now, and 2 minutes into the final mission I'm getting 30 fps so far on my laptop, and I got 1 fps before. All I did was think about what was different between my laptop and my wife's computer, and then make them the same. After I get through the final mission and confirm it stays solid throughout, I will let you all know the solution.....