I downloaded the Witcher 2 at launch. After some adjustments and re installation of my nvidia drivers, the game worked perfectly at 1600X 900. I played through the prologue and about an hour into chapter one I got a huge slowdown in performance making the game unplayable. Now, whenever I start the game it works fine for about two minutes then experiences a massive slowdown making the game unplayable. I have adjusted my graphics with no impact.

I have installed patch 1.1, and while load time are better, it does not impact my issue. Anyone else have this problem or know of a fix? Thanks.