FarCry4 Fps Fix Mod

A lightweight performance optimizer for Far Cry 4 on modern PCs. Far Cry 4 was built for 4-core CPUs in 2014 and does not scale well on modern hardware -- this mod fixes that by tuning how Windows schedules the game, without touching any game files.

Safe for achievements on both Steam and Ubisoft Connect.

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Before [Click On Image To Watch GamePlay Video] :

After [Click On Image To Watch GamePlay Video]:

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What It Does

Optimization	What it fixes
CPU Affinity	Pins the game to physical cores 1-4 only (no hyperthreading siblings, no core 0). Stops Windows from migrating game threads to slow efficiency cores or interrupt-heavy core 0.
High Process Priority	Gives Far Cry 4 more CPU time over background applications.
Thread Priority Boost	Bumps every thread inside the game process to Highest, tightening frame timing on the render and physics threads.
1ms Timer Resolution	Windows default system timer fires every 15.6ms. At this rate the game loop wakes up late regularly, causing hitches. Dropping to 1ms makes the scheduler far more responsive.
GPU Process Boost	Finds NVIDIA / AMD / Intel GPU helper processes and boosts their priority to reduce stalls during texture streaming.
Disable Fullscreen Optimizations	Windows wraps fullscreen DX11 games in a borderless overlay that adds latency. This disables it for lower frame latency. Restored on exit.
Memory Cleanup (optional)	Periodically trims the game's working set to reduce RAM fragmentation. Useful on 8GB systems. Off by default.
Auto Restore	Every change is reversed when you quit the game. Nothing is left behind.

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Requirements

• Windows 10 or Windows 11
• PowerShell 5.1 or later (included in Windows by default)
• Far Cry 4 (Steam or Ubisoft Connect)

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Installation

See INSTALL.md for full setup instructions for Steam, Ubisoft Connect, and the manual method.

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File Structure

Far Cry 4/                      <- drop everything here
|-- config/
|   |-- settings.json           <- tweak options here
|-- launcher/
|   |-- process.ps1             <- main optimizer script
|-- SteamLauncher.bat           <- used for Steam launch option
|-- UbisoftLauncher.bat         <- used for Ubisoft Connect (one-click)
|-- gameProcess.bat             <- manual launch method

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Configuration

Open config/settings.json to adjust behavior:

{
    "ProcessName":                  "farcry4",
    "Priority":                     "High",
    "UseSmartAffinity":             true,
    "BoostThreadPriority":          true,
    "BoostGpuProcesses":            true,
    "DisableFullscreenOptimize":    true,
    "EnableTimerResolution":        true,
    "ChangePowerPlan":              false,
    "EnableMemoryCleanup":          false,
    "MemoryCleanupIntervalSeconds": 120,
    "LogToFile":                    true
}

Setting	Default	Description
Priority	High	Process priority. Use High. Never use RealTime -- it can freeze your PC.
UseSmartAffinity	true	Pin game to physical cores 1-4, skip core 0 and HT siblings.
BoostThreadPriority	true	Boost all game threads to Highest within the High priority class.
BoostGpuProcesses	true	Boost NVIDIA/AMD/Intel GPU helper process priorities.
DisableFullscreenOptimize	true	Disable Windows fullscreen optimizations for lower frame latency.
EnableTimerResolution	true	Set system timer to 1ms for smoother frame pacing.
ChangePowerPlan	false	Switch to High Performance power plan while the game runs. Enable if your CPU clocks down during gameplay. Requires admin.
EnableMemoryCleanup	false	Trim RAM periodically. Recommended on 8GB systems.
MemoryCleanupIntervalSeconds	120	How often to trim memory (seconds).
LogToFile	true	Write optimizer.log in the game folder so you can verify what ran.

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How It Works

The mod does not launch the game itself. Steam or Ubisoft Connect always launch the game normally through their own process chain -- that is what keeps achievements working. The optimizer starts in the background, waits until it detects the running farcry4.exe process, then attaches to it and applies the settings from outside. When you quit the game, every change is reversed.

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FAQ

Will this break my achievements? No. The game is always launched through Steam or Ubisoft Connect normally. The optimizer only adjusts Windows process settings from outside -- equivalent to manually changing priority in Task Manager.

Does it work with mods, ENB, or ReShade? Yes. This mod only touches process scheduling, not game files. It is fully compatible with any other mod.

My CPU has more than 4 cores -- does affinity hurt performance? No. Far Cry 4's Dunia Engine 2 was designed for 4 physical cores and does not scale past that. Giving it more cores causes more inter-core synchronization overhead, not more performance. Pinning to 4 fast cores gives it what it was designed for.

Can I use this on other Ubisoft games? The ProcessName in settings.json can be changed to any process name. The other optimizations apply generically. Results will vary by game engine.