Download and install (frequently bundled with MSI Afterburner). Open RTSS and click the Add button at the bottom left. Select your AC4BFSP.exe file. Locate the Framerate limit box on the right side.
: Surprisingly, the game's log file can cause stuttering if it gets too large. Locate Uplay.txt in your game folder, delete its contents, and set the file to Read-Only in its properties. YouTube·Dallin_Shttps://www.youtube.com
Method 2: Using RivaTuner Statistics Server (RTSS) for High Refresh Rates
| Issue | Likely Cause | Solution | | :--- | :--- | :--- | | | Physics not decoupled. Wrong DLL version. | Delete the mod files. Re-download from Nexus Mods (version 2.5 or higher). | | Game crashes when boarding | Frame rate exceeding 165 FPS. | Cap your FPS via Nvidia Control Panel to 144 FPS. | | Cutscenes stutter | Mod is locking cutscenes to 30 FPS by accident. | Edit FPSLimit.ini . Find CutsceneMode=2 and change to =1 . | | No sound during Sea Shanties | Old bug triggered by high FPS clearing audio buffers. | This is rare. Restart checkpoint. | | Cannot interact with the Jackdaw's wheel | HUD scale bug. | Hit Alt+Enter twice (windowed/fullscreen toggle). |
Launch Assassin's Creed IV: Black Flag and load into your main save file. assassin 39-s creed black flag 60 fps unlock
Launch the game and ensure the in-game VSync toggle is disabled. Warning: Handling High Framerate Physics Bugs
To fix the issue, it helps to understand why it happens. Black Flag utilizes an older iteration of the AnvilNext engine. The game's built-in Vertical Synchronization (VSync) setting uses a "double-buffered" technique.
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Method 3: Using Third-Party Software (D3DOverrider or RivaTuner) Locate the Framerate limit box on the right side
You can try editing the Assassin4.ini file (found in Documents\AC4 Black Flag ). Changing the RefreshRate and DisplayableRefreshRate values to match your monitor's refresh rate (e.g., 144) .
Just remember: Leave her, Johnny, leave her. But not before you unlock that frame rate.
Change both values from 60 to your monitor's native rate (e.g., 144 or 165 ). Save the file and close it. Method 3: Optimizing Graphics for High FPS
Enable (note: while Black Flag uses DirectX 11, forcing driver-level sync tools via Radeon Anti-Lag or Enhanced Sync often yields the same smoothing effect). Launch the game. YouTube·Dallin_Shttps://www
Download (typically bundled with older RivaTuner releases or standalone community archives).
As mentioned above, internal Vsync in this game is poorly optimized. Use your graphics card control panel (NVIDIA Control Panel or AMD Radeon Software) to handle Vsync instead.
Launch the game, go to the graphics options, and turn . For AMD Users: Open the AMD Software: Adrenalin Edition . Navigate to the Gaming tab and select Games .
This article covers everything you need to know about unlocking the frame rate in Assassin’s Creed Black Flag , including official patches, community mods, .ini file tweaks, and the hardware required to finally see Nassau at 120 FPS.