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.
: 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. 1440x900 Thoughts: Assassin's Creed 4 – Black F...
: Disable this entirely unless you have a high-end NVIDIA card, as it is a primary cause of stuttering. Fixing the 60 FPS Cap and Stutter Running Assassin's Creed IV: Black Flag at a
: Set these to "Low" or "Off" . The "High" setting consumes considerable resources for a visual effect that is often distracting. : Disable this entirely unless you have a
: Right-click the game’s executable ( AC4BFSP.exe ), go to Properties > Compatibility , and check "Override high DPI scaling behavior" to ensure the application handles scaling correctly. Performance Optimization Settings