Re: Lost Planet stutter?
If you're using hyperthreading with your CPU, make sure to set concurrent operations to 7 in the game's settings menu. Setting it to 8 causes problems.
If that doesn't work, you might want to try backing off on your overclock. 4.2 GHz at >1.5v is a lot. Your system might benchmark stable, but sometimes seemingly less intensive applications can cause a problem.