What strikes me is not general optimization, but the utter lack of effect that the settings seem to have on the game. In particular, when the woman is not on screen, the game runs surprisingly well; but both on the lowest AND highest settings, it performs the same, including the complete drop in frames when she IS being rendered on-screen. I got as much as one or two extra frames dropping to Very Low from Ultra. It seems that the graphics settings don't actually impact how the game runs at all.