The following steps outline the setup process as recommended by community guides:

If is on, the injector should detect the game and apply the fix immediately.

Click and select the dualcore.dll file you just moved into your bin folder. Launching the Game : With Extreme Injector running, launch Far Cry 4.

Once the game is running, you may still face performance issues on lower-end hardware. You can further optimize the experience with these tweaks: How to FIX Far Cry 4 Black Screen!

(or a similar stable version like v3.3).

and EasyHook64.dll (often bundled together in dual-core fix packs). Administrator privileges on your PC. How to Install and Use the Extreme Injector Fix