A single 1080 getting 40ish FPS average at 4k is par for the course. I honestly don't see what's so great about the tech behind the game. If it really did boost performance/framerate, then we'd see single 1080s managing to hold 60. That is unless the chart in the first post is without the MRS feature that supposedly makes everything better. If so, then please make it clearer, since it appears slightly contradictory.