Any recent SLI fix?

[zamboni]

Been loving the game so far, I've got triple monitors and am dying to feel the atmosphere at full 7850x1080 in the darkness. 

Unfortunately I just don't have the graphical horsepower with one GPU to run it at acceptable frames.... but I know I can run it perfectly with 2. 

I've tried all the SLI fixes but they're outdated. I even tried rolling back the driver to one from almost 4 years ago but it made no difference.

Can anyone help me get this working?

Thanks,

Zamboni