FYI; both cards having a relatively constant load of 50% each means the game only ever treats it as ONE card. Exactly the same behavior as 1.0 had, and it had a SLI profile as well.

Meaning you DON'T get an advantage from using SLI (yet). I tested it with a 2x260GTX cards back then, I had exactly the same if not inferior framerates with two cards as I had with one and none of them ever went over 50% usage even though the framerate crashed to 20fps and below at those settings.

So just because the GPU is used doesn't mean SLI is being utilized.