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Windows Process Optimizer

Give your active app more breathing room

AutoHotkey v2 Windows 10/11 MIT License

Windows Process Optimizer is an AutoHotkey v2 script for Windows 10/11.

It gives fewer computer resources to apps you are not using, so the app in front of you can access sufficent resources.

What It Does

  • Watches which window you are using.
  • Skips the active app by default.
  • Slows down background apps you choose.
  • Can lower CPU, memory, disk, and scheduling priority.
  • Can restore changed processes when you pause or exit.

Requirements

Quick Start

  1. Install AutoHotkey v2.
  2. Right-click Windows Process Optimizer.ahk.
  3. Choose Run as administrator.
  4. Use the tray icon to pause or exit.

Choose a Mode

Open Windows Process Optimizer.ahk and edit CONFIG near the top.

Use whitelist mode when you want to throttle almost everything:

mode: "whitelist"

In whitelist mode, add apps you never want slowed down to exceptions:

exceptions: [
    "explorer.exe",
    "Flow.Launcher.exe",
    "AutoHotkey64.exe"
]

Use blacklist mode when you only want to throttle specific apps:

mode: "blacklist"

In blacklist mode, add apps to targets:

targets: [
    "Taskmgr.exe",
    "downloader.exe"
]

Common Settings

Most people may only need these:

  • mode: choose "whitelist" or "blacklist".
  • exceptions: apps that should never be slowed down.
  • targets: apps that should be slowed down in blacklist mode.
  • cpuRateLimitPercent: max CPU percent for throttled apps.
  • cpuAffinityMask: CPU cores throttled apps may use.
  • useSuspendCycles: extra harsh throttling. Leave this off unless you really need it.

Default Safety Skips

The script is set up to avoid obvious bad ideas:

  • It skips the app you are actively using.
  • It skips the active app's process tree.
  • It skips Microsoft Store / UWP apps.
  • It skips apps with active audio or video output.

You can change these in CONFIG, but the defaults are safer.

Notes

  • Background apps may become slow. That is the point.
  • Some apps may behave badly if throttled too hard.
  • Pause or exit from the tray icon to restore changed processes.

Made with ❤️ by Evan Schoffstall