Im in Chapter 7 now. Not a single crash, not a single glitch. I have a A64/GeForce SLI/Soundblaster setup (common hardware that is) with all the latest drivers. I have had no problems with the controls, in fact, I think they are above many other games. I found Chapter 7 a letdown though.

Slight spoiler:
In Chapter 7 you miss your "backpack" the first part of the chapter. But I am a MAGE. I should have my spells IN MY HEAD. I also only have 50 health so I can survive about 2 attacks from orcs, and I rely on my healingspell (gone) to survive.