Same here.
Zotac GTX 980 AMP! Edition, no way to run smooth Watch Dogs, even in HIGH Texture or low setting.
V-Sync on or off, 1 frame, 2 frame, DVI Monitor 120Hz, HDMI TV 60Hz .... i try all.
Issue persist.

Nvidia Driver or Ubisoft optimization issue this game is not playable with a GTX 980.