Hello there,
I have an Asus N550JK notebook with Windows 8.1 64 bit installed. In order to play the demo I had to install the Microsoft DirectX Runtime using the web setup (it is not working with the DirectX 11 that comes with Windows 8.1).
Anyway, this are the specs:
Intel HD4600 with 1792 MB of ram
Nvidia GTX850m with 4 GB of ram
Intel i7 4700HQ processor
16 GB of system memory
I tried either with the integrated and the dedicated GPU: I didn't notice much differences in frame rate switching between the two.
The lowest framerate with both is around 45 fps near the Iron Temple (toward the tent) facing the plaza. Most of the time I get 62 fps.
I noticed the grass is floating in the air in some spots at the left of the temple