Call of Duty: Black Ops in Parallels 8

I'm running Windows 8 in Parallels 8, and trying to play Call of Duty: Black Ops (through Steam). But the mouse is moving me around like crazy. Even if I drop sensitivity to nothing, it still moves me around really fast. I've had problems like this in the past with games, and hadn't solved them. Some games work, and others don't. Has anyone encountered/solved this?

thanks in advance.

 

So far i know it needs multiple core. I don't know how much core you are using. If possible add more core then may work fine.

Thanks

 

I've got 7 cores assigned, so I don't think that's it.