I tried it with vorpX yesterday. Unfortunately the game crahses, when it’s set to global illumination/dx11. But dx9 works, unfortunately not in g3d, it works only z-modes but looks good though.
On my actual pc with gtx660 and a Quad 2 Core it runs not supersmooth, but good enough. Haven’t tried it with a decreased FOV. The normal fov-setting is much to near.
@Ralf: any tip for running this game in dx11? Besides this I installed the Mod “Stalker Complete 2013”, works with dx9.
And at least: the game itself is even without vorpX very good, if you like fallout or Metro. And for 10 bucks, it should be no question to buy it. Peanuts! Have fun! ;-)