Help! My computer is super SLOW when I use iClone 7.

My computer is less than 6-months old and lightning fast video card (a gaming computer), lots of RAM and hard drive space.

* It was fine yesterday.
* I have the updated latest version of iClone
* I ran Norton (no viruses)
* I got rid of all the stuff on my desktop so it wouldn't slow it down. 
* I defragged the hard drive
* Looked for any props with reflections and turned those off. 
*No other programs are running, nothing else is being downloaded in the background.