Although the shadows are indeed pretty on the PTS, I can sadly tell that the promised optimization for SLI setups is NOT working.
I'm getting 60+ FPS whatever the settings on live servers.
On the PTS, whenever I put the shadows on high, it drops to 28-30... Even with today's patch (it even got a little worse?)
Dual GTX 570 with latest NVidia drivers.
They probably haven't fully optimized it for the test serve, though. If nothing else at least the shadows will LOOK better