Lightweight portable FPS optimizer for Call of Duty: Modern Warfare 4. Boost performance, reduce stutter, and lower input latency without touching game files.
MW4 Optimizer is a portable, lightweight Windows utility that applies system‑level tweaks to increase FPS stability, reduce stutter, and lower input latency in Call of Duty: Modern Warfare 4 — without touching game files. Every change is logged and fully reversible with one click.
| Feature | Description |
|---|---|
| CPU Priority Boost | Raises the game process priority so the OS delivers frames more consistently. |
| Memory Cleanup | Flushes unused working sets to reduce micro‑stutters during heavy scenes. |
| Network Latency Tweaks | Disables Nagle’s algorithm for the game to improve hit‑reg and reduce ping spikes. |
| GPU Scheduling | Enables Hardware‑Accelerated GPU Scheduling (HAGS) to cut render latency. |
| Background Trimming | Suspends non‑essential processes while you play — more resources for the game. |
| One‑Click Restore | Every change is journaled. Restore the original state of your system in a single click. |
| Component | Status | Notes |
|---|---|---|
| Windows 10 (64‑bit) | ✔ Supported | .NET Framework 4.8 required |
| Windows 11 (64‑bit) | ✔ Supported | Recommended for HAGS feature |
| Windows 7 / 8 / 8.1 | ✘ Not supported | Missing required APIs |
| Modifies game files | ✘ No | Game directory is untouched |
| Anti‑cheat interaction | ✘ No | No memory read/write access |
| Telemetry / outbound calls | ✘ No | Optional update check only |
| All changes reversible | ✔ Yes | “Restore Defaults” button |
Is MW4 Optimizer free?
Yes. The tool is released under the MIT License — free to use, inspect, and modify. The source code is available on GitHub.
Will it get me banned?
No. The tool does not touch the game process memory or anti‑cheat. It only applies documented Windows APIs to the system, exactly as a user could do manually via Task Manager or Registry Editor.
Do I need administrator rights?
Yes — a few of the system tweaks (such as process priority and registry settings) require elevation. Right‑click the executable and choose Run as administrator.
How do I revert all changes?
Open the tool and click Restore Defaults. Every change is journaled, so the original state is restored precisely.
Does it work with other Call of Duty titles?
MW4 Optimizer is tuned for Modern Warfare 4. Some features (CPU priority, memory cleanup) will work for any game, but the network and process detection logic is MW4‑specific.
How do I verify the archive integrity?
Compare the SHA‑256 hash of your downloaded archive against the value published in SECURITY.md. Never run a build whose hash does not match.
See SECURITY.md for the archive hash, responsible disclosure policy, and safety guarantees.
MIT — see LICENSE for details.