Before the new patch (v.1.8) I had 28-34 FPS (with the "Custom Avanced Graphic Option" tool (v.1.6.1))!!! http://www.chip.de/downloads/Crysis-2-Advanced-Graphics-Options_48075951.html
I have payed 60€ for this Game and can't play it now!
Try to use the Custom Settings tool from WasDie again and open the generated autoexec.cfg, corret all the commands so the syntax is: "commandname = commandvalue"