Game: Assassin's Creed IV: Black Flag Mod Focus: 60 FPS Unlock (PC) Verdict: Essential. It transforms a great game into a masterpiece.
For years, Assassin’s Creed IV: Black Flag has held the title of the fan-favorite entry in the Ubisoft franchise. It is the pinnacle of the sailing era, offering sun-soaked beaches, terrifying storms, and the best sea shanties in gaming history. However, playing it on PC or modern consoles often came with a glaring caveat: the game was locked at 30 frames per second.
Thanks to the recent 60 FPS patch for modern consoles and the enduring PC modding community, that lock has finally been broken. Having replayed the game with the framerate unlocked, I can confidently say this is not just a visual upgrade—it is the definitive way to play.
Instead of unlimited FPS, lock the game to 72 FPS. The engine tolerates 72 FPS (a 20% increase over 60) without major physics breaks. It is not true "unlocked," but it feels snappier. assassin 39-s creed black flag 60 fps unlock
Before we dive into the "how," we must understand the "why." Unlike modern games that separate rendering from logic, older iterations of the Anvil engine (used in AC3 and AC4) used a double-buffer vertical sync (V-Sync) system tied to the simulation clock.
When you run Black Flag at 60 FPS, the simulation step runs every 16.6 milliseconds. If you force the game to run at 120 FPS, the simulation step doubles. Consequently:
Ubisoft never officially patched this because a remaster was not financially viable. The community was left to pick up the pieces. Title: The Golden Age of Piracy, Finally Unleashed
Once you unlock 60 FPS, dial in these settings (console or PC):
The method depends entirely on where you play. Let’s break it down.
Yes, absolutely—with slight compromises. Swimming: Edward dives and surfaces at double speed,
Sailing the Jackdaw through a storm at 120 FPS on a high-refresh monitor is a transformative experience. The fluidity of Edward’s dual-sword combat, the responsiveness of diving harpoons, and the smooth panning across Kingston’s rooftops feel like a modern game.
However, be aware of the "Naval Physics Anomaly." Between 100 and 144 FPS, the waves may occasionally clip through the ship’s hull. Above 144 FPS, the jackdaw may bounce like a rubber duck in a bathtub during rogue waves.
Final recommendation for each platform: