I am on the 3rd floor of the crypt tower and suddenly it takes minutes for my character to move. It has never plyed this slow even when I had crap for a video card. I have installed nothing recently. This is really playing havok with trying to battle the meanies. Has this happened to anyone else?

Mercc

The room with the moving walls, if I'm not mistaken. I had the same trouble. Try saving the game and reloading that save. Doing this once or twice should let things run smoothly enough for long enough to get you to the other end.

I have saved and reloaded. Even though i killed everything (?) I like to check EVERYTHING out. So I am going room by room. I get a smooth run for about 5 minutes after reloading. Oh well, I will do what i can.

Mercc

I think it's just cause there's so much shit going on up there at different times, what with all the walls disappearing and reappearing. I just muddled through, cause I'm stubborn. I just blew down the walls that got in my way.

This is a known bug. Just make your way to the exit as soon as you can.