: Locate Assassins4.ini in your "My Documents/Assassin's Creed IV Black Flag" folder. You can manually set DisplayWidth=1440 and DisplayHeight=900 , though the game may reset this if it doesn't recognize the resolution.
: This is the most intensive setting. Dropping it from "Very High" to "High" can provide a massive frame rate boost. 1440x900 Thoughts: Assassin's Creed 4 – Black F...
: 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. : Locate Assassins4
: 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 Dropping it from "Very High" to "High" can
: In your NVIDIA Control Panel or AMD Catalyst , go to "Adjust desktop size and position" and set scaling to "Fullscreen" rather than "Aspect Ratio".