Chromarict

I know this topic is a bit old and you may have already figured it out elsewhere, but I've been playing at 3440x1440 since I got the game a few days ago and it works perfectly. Just don't set the resolution scale setting above 100% or it'll kill your frame rate. I learned that the hard way when the maximum graphics preset put it on 200% and I was only getting 30-45 fps.