Hey, it's my first post here, i'm having a very bad issue with my brand new ASUS GTX 680 DirectCU II 2GB model.

So, in the single player, in the "Welcome to the jungle" section during the tall grass field where you have to run away from the HADES tower that fires rockets at you, i get about 30-27 fps, extremely sluggish and unplayable whenever i look at the grass, the same thing happened huring the cutscene with psycho where you see the tower for the first time, i see everybody else getting 40-45 fps which is totally fine.

I've got the latest nvidia drivers and my in-game settings are all Very High, low Motion Blur and FXAA @ 1080p.

Windows 7
CPU model: Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
RAM: 8GB CORSAIR VENGEANCE
650W XFX PSU

Can somebody please help me?