Better system, but watch the video anyway:
https://www.youtube.com/watch?v=0t4Wks2xclo
Settings shown at 0min40sec
(3440x1440 is probably about 20% or so more demanding than 2560x1440, but a GTX1080Ti is about 75% more powerful than a GTX980Ti so you would need LOWER SETTINGS than the video and still not hit 60FPS)
Of course, just dropping anti-aliasing should make a huge difference.
*Still, it's one of the worst-optimized games. Considering they got $150M or so something is not right here. Hopefully they have a DX12 or Vulkan branch being worked on, or some heavy update to DX11 coming in the near future.
If they've been putting aside the money rather than pay better coders and then just let this fizzle out people will be pissed...