i have a HD5770 and use a Q9450 CPU with 4GB of PC2-6400 RAM. as my monitor is 1920x1080 i wanted to play it at this but it is a little jerky. if i lower it to 1640 maybe, any idea what settings i should apply to the rest of the graphics options? cheers guys
For me turning shadows off and detail distance gives the best results, oh and make sure you don't have vertical sync on.
Shadows is the most framerate damaging graphic option I've found. Try and stick to the native resolution or it'll begin to look irreparably awful. The best answer I can give is this though; mess around with the settings and get a framerate and appearance you're happy with.
To run my 4870 at an acceptable framerate in EfLC, I had to lower my resolution to 1440x900, turn off shadows and reduce the detail sliders down to about 15 or 20 I think. I could run it at 1680x1050 with shadows on, but the framerate dropped too much at night and when the weather changed to rain or fog.
everything low or off details set to = 10 = 15 vehicle = 1 definition = on vsync = off go baseline, then work your way back up...