Because the game natively supports 16:9, users on 16:10 monitors like yours frequently encounter letterboxing.
: The game lacks native triple buffering, which causes the frame rate to tank if it drops even slightly below 60 FPS. Use D3DOverrider or the NVIDIA Control Panel to force Triple Buffering and VSync on. 1440x900 Thoughts: Assassin's Creed 4 – Black F...
: Some users report that setting VSync "On" in-game, then Alt-Tabbing out and back in, forces the game to refresh its frame rate logic and smooth out performance. Because the game natively supports 16:9, users on
: Set these to "Low" or "Off" . The "High" setting consumes considerable resources for a visual effect that is often distracting. : Some users report that setting VSync "On"
: In your NVIDIA Control Panel or AMD Catalyst , go to "Adjust desktop size and position" and set scaling to "Fullscreen" rather than "Aspect Ratio".
: Set this to "High" rather than "Soft Shadows." Soft shadows are significantly more demanding (up to a 29% FPS drop) for a negligible visual difference.
Running Assassin's Creed IV: Black Flag at a resolution of (a 16:10 aspect ratio) often presents unique challenges, as the game is natively built for 16:9 displays. This can result in permanent black bars or scaling issues.