Cubian Legend's TOD was well known. I tweaked a lot Crysis. I'll try when I'll be back home (Wednesday). But I noticed "BorderLess FullScreen" helped me a lot. Vsync to 1 with 120hz in the gamerprofile.xml (read-only) help too. So good news if it helps to make Watch Dogs even smoother ! Apart textures I set to Ultra, I use exactly the same settings as you !