The PC version already supports 60 FPS natively, but sometimes VSync or refresh rate issues lock it lower. Try these fixes:
Released in 2013, Assassin’s Creed IV: Black Flag is widely considered a high-water mark for the franchise. The thrill of sailing the Jackdaw through a hurricane, the beauty of diving into crystal-clear waters, and the chaos of boarding a Man O’ War are timeless experiences. However, for nearly a decade, PC players suffered from a bizarre technical limitation:
When Black Flag launched, Ubisoft implemented a 60 FPS lock due to the engine’s reliance on frame timing for certain mechanics, including naval cannon cooldowns, ship traversal, and detection AI. On modern high-refresh-rate displays (120Hz+), the game’s legacy cap results in stuttering, screen tearing, and underutilized GPU headroom. The unofficial 60 FPS unlock patch (often misnamed, as it removes the cap entirely) bypasses these restrictions, raising questions about the ethics, legality, and technical ingenuity of modding for performance. assassin 39-s creed black flag 60 fps unlock
— Fair winds and high refresh rates, pirates.
Unlocking the frame rate in Assassin's Creed IV: Black Flag is notoriously difficult because the game engine is hard-capped at approximately The PC version already supports 60 FPS natively,
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)
If you want, I can produce exact recommended config file edits or a short mod list (with safe Nexus links) tailored to your GPU/CPU — tell me your CPU, GPU, RAM, resolution, and whether you prefer visual quality or framerate. However, for nearly a decade, PC players suffered
Thus, a simple FPS unlock is insufficient; the mod must also decompile and patch the executable to decouple logic from rendering.