Dante's Inferno - Settings

Hi everyone, on the news that Dante's Inferno is now 100% playable, i wanted to give it a try; since is one of the games that i always wanted to play but didn't had a PS3. Anyway, yesterday i tried to play the game but i was unable to do it. I tried different settings, getting some better or worst fps and stutter; but nothing smooth enough to play it. 

My specs are the following:

Intel core i5 4690K - 3.5 GHz
Gigabyte Z97X-G3
Corsair 16GB (2x8) DDR3 3690 MHz
Nvidia Geforce GTX 970 4GB
Windows 7 Pro 64bit SP1
1080p Monitor at 75Hz

I think i have enough hardware to play it smoothly, but just the initial cinematic stutters a lot; and even after that, the game itself gets really choppy. Both visuals and audio are affected. I even removed the 60fps cap, and even though i managed to get 100 or more fps on the intro, after selecting new game, it just drops to 1 fps and then starts to go up and down betwen 60 and 1 without smoothness.

Can someone give me a hand with this?? Maybe is my hardware, but i'm guessing that is the settings i'm applying 

Thanks in advance

Regards

CPU not powerful enough, but you can try increasing SPU Block Size