These benchmarks are not correct. See my system specs in my config below. At 1080p UQ, which I've been happily playing at with VSYNC OFF, I never see FPS dip below 50. I'm routinely hovering at 55-57. I am using 361.43 however. Also, there is NO builtin benchmarking tool that I am aware of in this game. Maybe the final product will have one. None of my GPU/CPU is overclocked, and the game has always been fluid with no stuttering. The game play thus far is quite good, and I look forward to the final product. I've had numerous online friends tell me that this game is NOT stable with AMD GPUs, game crashes to desktop or crashes their computer altogether, but I cannot vouch for things they may be doing on their end to exacerbate this behavior. I'd definitely take these results with a huge grains of salt.
I watched quite a few Twitch streamers on Nvidia hardware with monster rigs barely above, sometimes below 60fps. Yes overclocked 980 Tis. So no, there is nothing happy about it performance wise.
As for AMD crashing. Never had a single crash or bug playing it on R290.