Don't worry about 3D, it's the "fake" 3D mode that is used on Watch Dogs (like in Crysis 2 & 3, if you've ever seen them running with 3DVision), so it has basically the same impact on performance as SMAA. Of course it does look like sh*t as it's a post-process effect, but could be worse. My SLi is running somewhat high framerates on this game when enabled (100+ average) but stuttering and freezes makes it unplayable. So benchmarking and playing are two separate things on W_D... Running single card drops avg FPS to ~55-60 but it's so smooth compared to the SLi stutter fest that it's the only way to enjoy it (I'm running high settings for textures, shadows and reflections instead of ultra btw - 2GB VRAM etc.). It WILL occasionally stutter for 1/4 second or so, but rare enough to forget it when coming from the SLi disaster. 3D enabled is running at the same 55-60 FPS avg as explained before with one GPU used, and it's just a GTX680 2GB (yet massively overclocked). I wouldn't worry too much about your experience on this game in 3D, though 2D won't use your hardware's power for sure. It's not your system, it's just the game and Ubisoft's incredible skills to insert poop in everything they make, and never fix it of course. I'm almost ashamed to be french when I see what they're doing..