The only fundamental gameplay problem lies with the lag compensation coding in the game. (gamingenthusiast.net)
And this can cause a few gameplay problems such as your carefully executed plan failing because the water refuses to obey the laws of physics which your brain tells you it must. (wolfsgamingblog.com)
This is extremely frustrating as this was supposedly a next gen experience and that is one of the same gameplay problems that I've come across in every Assassin Creed game. (gamegravy.com)