okay...after a while of messing around with my comp trying to find a solution to my problem i found out when i uninstall the graphics driver for my asus GTX560ti 1gb the game runs perfectly on maximum no frame rate drops at all by the looks of things but when i install the driver it seems to lag everytime it needs to render/spawn something in the game because its fine without turning camera but as soon as i do its like the fps is around 1-3 :/ really wierd then i stop moving cam and back to normal until movement starts again any help would be much appreciated 
[reedit]
just so everyone knows the lag is not present on any other game besides this one..
also i used to have a ati radeon hd 5450 in it so will making the change from ati to nvidia cause this maybe?

[reedit]
just so everyone knows the lag is not present on any other game besides this one..
also i used to have a ati radeon hd 5450 in it so will making the change from ati to nvidia cause this maybe?