I'm not sure what the problem is. I have the game set to the lowest quality, and the menu screens are running perfectly fine, but when the game starts, the framerate drops to about five to nine frames per second.
I've shut down all other programs while playing, that hasn't helped. I've uninstalled and reinstalled it. That hasn't helped.
The Sam and Max games worked fine for me. So have SBCG4AP and the first two parts of W&G.
Muzzled gave me the exact same problem when I was playing it. It would go from fine to laggy and back to fine. I just downloaded it again an hour ago, and now it's running smoothly.
Can someone tell me what's going on?