: 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.
: 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 1440x900 Thoughts: Assassin's Creed 4 – Black F...
: 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. : Set this to "High" rather than "Soft Shadows