Black Flag launched in 2013 on the PS3 and Xbox 360. On those systems, it ran at 30 FPS (often dipping into the 20s during naval battles). Even the PS4 and Xbox One versions were locked at 30 FPS for years.
Right-click the file and open it with Notepad. Locate the line reading VSync=1 and change it to VSync=0 .
Assassin's Creed IV: Black Flag has a hard-coded engine engine limit that caps the frame rate at (specifically roughly 62.5 FPS). While there is no official in-game setting to "unlock" this to higher rates like 144 FPS, you can use community-made mods or configuration tweaks to stabilize or bypass the limit. Unlocking High Frame Rates (60+ FPS)
The underlying issue stems from how Ubisoft implemented double-buffered V-Sync in the AnvilNext engine back in 2013. If your graphics card takes even slightly longer than 16.6 milliseconds to render a single frame—dropping your actual performance to 59 FPS—the engine immediately cuts your refresh rate in half, dropping the display output to a sluggish 30 FPS. assassin 39-s creed black flag 60 fps unlock
How to Unlock 60 FPS in Assassin’s Creed IV: Black Flag on PC
The journey of bringing Assassin's Creed IV: Black Flag into the modern era isn't about waiting for Ubisoft. It's about taking the helm yourself. By installing the 240 FPS Patch and then applying a simple performance tweak, you can completely transform this classic into a buttery-smooth, stutter-free masterpiece.
The most popular and reliable solution is the 240 FPS Patch by Kamzik123 , available on Nexus Mods. While originally made to raise the cap to 240 FPS, the patch also includes an unlock for the fog rendering and a 4GB patch, making it the all-in-one solution for modern systems. Black Flag launched in 2013 on the PS3 and Xbox 360
: If you are struggling to hit 60 FPS, lowering this to Normal is the single biggest performance boost besides PhysX.
Click and select AC4BFSP.exe (Single Player) from the list. If it is not there, click Browse and locate it in your game installation folder. Scroll down to find Vertical sync and set it to On or Fast .
Assassin's Creed Black Flag Resynced Out July 9 - Ubisoft News Right-click the file and open it with Notepad
⚠️ Note: Game physics and missions are designed for . Going above (e.g., 144 FPS) can break swimming, climbing, and cutscenes.
Whether you are trying to stabilize a choppy 60 FPS presentation or completely uncap the frame rate on a modern PC, this comprehensive guide outlines every working strategy, configuration tweak, and modding option available. The Architecture of the Black Flag Frame Rate Cap
Ensure Windows is set to high performance. You can enable "Ultimate Performance" via the Command Prompt if necessary. Graphics Settings: Shadows: Change from HFTS or PCSS to High or Medium. Environment Quality: Set to High. Anti-aliasing: Set to FXAA or SMAA, rather than MSAA.
Click and select AC4BFSP.exe from your installation folder. Scroll down to Vertical Sync and change it to Fast or On . Locate Triple Buffering and change it to On .
The dedicated modding community has created tools to finally set your frame rate free.