Far Cry 2 Crashing 660 Ti

I finally got FC2 for the PC, it was on sale for 2.50, about 15-30 minutes into playing the game crashes though, It seems to me like Vsync isnt turning on, and is then just heating up my card until it crashes, ive tried lowering the Overclock but to no avail, ideas?

Note: Im using a MSI 660 Ti using the 314.21 Drivers as of right now, I previous had overclocks of +25 voltage, +75 Clock, and +300 Memory, I changed them to +0 Voltage, +25 Clock, and +100 Memory, but that did not fix the crashing.