The game is extremely heavy, and you need some sick hardware to run it at max details at a smooth 60 FPS constant.
My GTX 970 is giving all its got, but it still isnt able to hit 60 FPS with everything maxed.
So you need something better, I would say probably a GTX 1070 in order to not see framerate drop below 60.
Now if you have a 144HZ monitor or something like that, and you're trying to hit over 100 FPS, lol.....then good luck.
The thing is, the graphics in this game arent particularly amazing either. This kind of performance cost isnt really justified.
The graphics are fine, but nothing really fancy. In fact, in some areas the graphics seem bland and without much detail, even at max settings.