And you have the latest bios in your motherboard right? I my self had some serious issues with my Asus striker until the latest bios.. So I would start from there.
And newest asus motherboards have option on by default to overclock supported GPU’s. try going to your bios and see if you have that option and then try turning it off.

I have about the same specs as you so I decided to install BF2142 and GRAW and test run them... NO problems at all other than overwhelmed boredom!

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