i5 3570 | HD 7950 OC Dual-X | Crysis 3 BETA 1080p HD

avg fps: 40 My Pc Specs : CPU : Intel i5-3570 @3.4Ghz RAM : Kingston 8gb DDR3 1600Mhz Graphic Card : Ati Radeon HD7950 3gb DDR5 OC Dual-X (Sapphire) Motherboard : Asus P8H77 - V LE Antec High Current Gamer 620W 80+ Bronze Computer Case : Antec Three Hundred Two Internal Hard Drive 1Tb Monitor: Acer x223HQ Windows 7 64-bit Home premium Logitech G510 Keybord Logitech G500 Mouse Crysis 3 on ultra settings 1920x1080 with FXAA FOV: 80 Game Settings : Antialiasing FXAA. With MSAA High x8 I have only 15 fps...wtf ? All advanced graphics are on Very High (MAX.) Anisothropic filtering x16 "Motion Blur amount" : Disabled "Lens flares" : No 1080p