Start Up Lagging & Incomplete Menu

I received a holiday gift of Sins just yesterday, and I want to play. I own a MacBook with Windows Parallels, making it possible to play my PC games. Installation and registration was a success, and I then started up the game. The Starduck logo appears, seemingly normal, but the mouse is lagging significantly. It goes to a black screen for a little too long, until I click to progress to the opening story, and it seems to run somewhat normal. After I click again, the screen loads to the 'menu'. This 'menu' is basically a white canvas with jagged monochromatic shapes not nearly up to standard. With the mouse still lagging, I blindly click into the middle of the white abyss to see if I can miraculously click on some kind of option button to change the video technicalities, but I have no luck. I don't care what computer you're using, but if you have seen this type of problem before, I would appreciate it if you could lend me some suggestions or advice as to how I solve this problem. I want to have as much fun as you guys are having!