I'm experiencing the exact same issue as Xenris11!
I'm experiencing terrible flickering in Battlefront all the way from the main menus into the game, it's completely unplayable. Windowed/Borderless window work fine, as well as playing on a single monitor with SLI disabled. I can do surround in borderless windowed mode, so this is definitely an SLI issue.
I'm playing on a 7680x1440 NVIDIA Surround setup, the flicker occurs in both Surround and Single Screen SLI.
I am running SLI 680 4GB cards on Windows 7 64-bit.