Cheers for the replies, I grabbed it and had a quick few trial laps. Tried it maxed at 3440 and it ran avg 35-40fps so dropped to High and it was much much smoother.
Will have a good go of it later, felt fun.
My 1080 can just about average 60fps on ultra, dropping it to high it runs at a solid 100 (the refresh rate of my X34). Not really fiddled with settings too much but I think shadows has the biggest impact.