You are welcome, I'm so glad if it helped any.
This Cryengine 2 absolutely loves single threaded power of the CPU to a degree that is ridiculous. This comes from the not so optimal (if any) multi threading support of the engine.
The HT cores of modern (LGA1155 gen 3 and onward) Intel CPUs seem to struggle less to deliver than the AMD ones, maybe due to non-AMD favoring optimizations of the compiler?
And last not least, it seems the engine favorizes Nvidia GPU over AMD / ATI bang for buck wise.
The config i shared gives the absolute maximum FPS i can achieve and i don't have some overly powerful rig here:
GA-Z77N 8GB DDR3 @1600MHz / i7 2600S @stock (HT turned off) / HD7730 1GB DDR3 / ~250W picoPSU
and barely floats around 40FPS (dips below 20 FPS on dense actions) (~60ish in hanger)