Guys, can i change the Crysis 3 dx version from 11 to 9 or 10? If yes, please tell me how, i get an awfull lag. My FPS drops dramatically and this makes the game unplayable. Please help me i want to play Crysis 3 smoothly.

My hardware:
Intel Pentium Dual Core 3.1 Ghz
Nvidia GT 630 1GB Asus edition
4GB RAM

I am running game with origin opened and with low settings.
I have Windows 7 64Bit.
Thanks.

That's not possible, Crysis 3 is DX11 only.

Your PC is underpowered for Crysis 3, but you can try the script by Blutaaar666 for even lower settings: http://secure.gamesas.com/forums/viewtopic.php?f=65&t=63912