Before the 3.0 patch, my fps was on 40-50's, but now, it's about 15-35. I've lowered graphics too, I could easily play on 1920x1080 on high laptop settings, but now my resolution is 1600x900, and most of the settings are on low. I've updated my drivers, but it didn't help much. Please help!

My pc is Asus n56vz,

with i7 3630qm, 8 gb ram and GeForce GT 650M(2 gb version).

Thanks for your assistance!