For me, on GeForce 970, best setting is 4K rez downsampling to 1080p, 1024 Shadow, and 16x AA. Game look great minus some shadow clipping issue. Not too bad. p.s., can't believe this game don't support game control vibration. WTF?
https://twitter.com/LRFF13/status/656020170830286848 (Google Translate, not the best result but at least it's mostly understandable.)