After 10-15 minutes of gameplay I crash to desktop. Spec: Win7 Quad Q9400 (2.66ghz) 8gigs of ram Brand new GTX 660 ti superclock + 3gb (latest 310.70 drivers) My fps is low but I run at high graphic (it lag a bit but it's beautiful ) I tried the UN-PARK your core things to see if my fps will go up and nothing happened. After 10 or so of gameplay my game freeze and crash to desktop. It happened before with my old GTS 250 but after playing a long time. Any clue?