My normal desktop resolution is 1440x900 but when i play Assassin's Creed IV Black Flag and set the in game resolution to the exact same as my normal desktop resolutions there are black bars on the top and bottom of the screen. My graphics driver is up to date as my monitor driver. However when i set the game resolution to let's say 1366x768 it fits the screen normally and fills the whole display. Anyone got a solution for this problem?