Running this game at max settings ultimately depends on your CPU not GPU , I have 2 980s and for all purposes it can't max this game at 2560 x 1080p , my 5820k @ 4.2 is the deciding factor in framerate . With everything upto ultra including the advanced settings sliders maxed and on my framerate especially in grassy areas or Northern sandy areas can hit 40 odd fps , turning grass down a notch and pushing the sliders in advanced settings to below half way maintains me a solid 60fps with v sync on