Seems like the GPU/CPU utilization is still a problem. Getting ~20 FPS in some areas in the game while CPU is at 50% (one core @ ~75%, rest around 20-30 %) and GPU is at ~30-40%. Maybe at the least we could learn exactly what hardware configuration would be optimal for the game?

My system:

CPU: AMD Phenom II x4 965 @ 4.0 GHz
MB: Asus M4A89TD (890FX chipset)
GPU: EVGA GTX 970 SC ACX 2.0
RAM: 12 GB
OS: Win7 Pro x64 on SSD
PSU: Corsair 650W single rail, bronze certified