My system setup is a GTX 670 water cooled, i7 2600k and 16 GB of ram. My vid card temp never goes above 80 C my CPU temp never goes above 55 C so using maxed settings is not a problem, I use these settings because I have to in order for the game freezes to stop.
-Turn AA off
-Turn Post Processing onto the lowest setting
-Turn shadows onto the lowest setting
-Turn v sync on
-Run the game in windowed mode and then once you get in game hit alt + enter to go full screen.
-All of my other settings are on Ultra and I'm using 1920 x 1200 resolution.
This fixed it for me, hope it helps some one out there.
Edited by Circumnavigate, 21 February 2013 - 11:42 PM.