Quick! Someone tar and feather him!
edit: oh well, just finished The Witcher.
It's pretty good, but it could've been truly great if it wasn't so goddamned unstable.
I was getting an average of 40 fps when it ran properly, but there were times I'd load a save and would get about 10 fps. Reloading the same save never did anything, so whenever that happened I was forced to load an earlier save (though I later realized than the issue could be fixed by alt-tabbing out and back in). Thankfully the game never overwrites, so there's plenty of older saves to choose from. Of course, once you reach 200+ saves, the loading menu takes a good minute to come up, so that's kind of annoying.
And then there's the main area of Chapter III. It never ran at 30 FPS. Usually closer to 20. Thankfully it's mostly conversations and running around when you're there, but still, that's no excuse.
From what I read online, it's because there's too many NPCs in that area. Their AI is supposedly very CPU-intensive and the game apparently isn't optimized for multicores so.... yeah
Yeah, well that game had much worse issues when it was new. I kept CTDing in the swamp. I thought I wasn't going to be able to finish the game because it crashed regularly there.