No, you can't control it. It's just a demo to see if it will work on your computer. There is lots of settings in the simulator where you can change stuff. You can change the resolution so you can get a little better frame rate. What were you getting for a frame rate? If you were getting anymore then around 20 fps, you should be fine. I run it on an old computer I use to have and I was only getting 20 fps and it worked fine (it didn't chop).