I just bought AC4 yesterday and it lags like all hell. I tried lowering the graphics and everything, still tons of lag. I don't know what to do anymore. I played Assassins Creed III on my PC and I'm sure AC4 runs on the same engine, so why so much lag? If anyone can help me with these lag problems I will be very grateful.
(P.S. I did not install any patches for the game, so if you think a patch will help, then I will install one)