People have been complaining that this game has been running terribly even on high end machines. Slow downs, bad frame rate, stuttering, huge load times, capped @ 30fps with v-sync. So what does the developer say?
About the "24+ FPS is too low" and it is "bad performance" issue:
It is not bad performance and not too low. If it gets below 20 FPS than it is bad performance. 24 FPS is what a human eye sees as fluid and you watch the films in the cinema with 24 FPS – do you go to cinema again and again to see bad performance and horribly low FPS?
Where you need a higher FPS are mainly the action games, particularly if you play them in multiplayer.
Generally our aim was to set the game to 24+FPS, of course after the graphical settings have been set to the specific hardware (this is what the Auto Setup does – it also recognizes other issues like driver problems and such, so if you think that the auto setup has set you lower results than your hardware would deserve, there are most likely some problems in your rig that you should find)
What a joke. So you can run BF3 on ultra but not this even half decently, ah good enough!