Disable Efficiency Mode runs silently in your system tray and prevents Windows from deprioritising any process — automatically, on every boot.
Windows quietly applies Efficiency Mode to processes it considers non-essential. This tool overrides that decision every 5 seconds using a native Windows API call — no drivers, no hacks.
A one-time UAC prompt installs it to C:\Program Files\ and registers startup automatically.
A green icon in your system tray confirms it's active. Right-click to exit anytime.
All running processes are scanned every 5 seconds and CPU throttling is stripped from each one.
Registered via HKCU\...\Run so it's always active after every login — nothing to remember.
Setting StateMask to 0 tells the Windows kernel scheduler to give the process normal CPU priority — identical to disabling Efficiency Mode manually in Task Manager, except it applies to every process automatically and survives restarts.
Built to be lightweight, transparent, and completely out of your way.
Prevents the kernel from applying EcoQoS throttling to any process — games, creative tools, or anything in between.
No windows, no notifications, no configuration required. Just a tray icon with a right-click exit.
First run installs itself to Program Files and registers startup. You never have to think about it again.
One exe. No installer, no runtime, no DLLs to manage. Just download and run.
The app makes no internet connections of any kind. No telemetry, no updates, no callbacks.
Delete C:\Program Files\DisableEfficiencyMode\ and remove one registry key. Done.
The source code is open — read every line on GitHub. Here's a summary of exactly what the app does and doesn't touch on your system.
| Concern | Answer | How to verify |
|---|---|---|
| Network activity | ✓ None. Zero connections, ever. | Wireshark or Windows Firewall logs |
| APIs used | ✓ SetProcessInformation, OpenProcess · RegSetValueEx |
Sysinternals Process Monitor |
| Files written to disk | ✓ Copies itself to C:\Program Files\DisableEfficiencyMode\ once |
Process Monitor file filter |
| Registry changes | ✓ One key: HKCU\...\Run\DisableEfficiencyMode |
regedit or Process Monitor |
| Admin / UAC | ✓ One-time prompt to write to Program Files. Not required after. | UAC prompt shows the exact exe path |
| Kernel drivers | ✓ None. Entirely user-space. | System Informer → drivers tab |
Observe all system calls live using System Informer or Process Hacker while the app is running. Or just read the source.
No black boxes. The full source is MIT-licensed — read it, fork it, build it yourself.
Five small Python files. That's the entire app.
To build the exe yourself: pip install pyinstaller psutil pystray Pillow then pyinstaller --onefile --windowed --name DisableEfficiencyMode main.py
Free, open source, and running in under 10 seconds.
Windows 10/11 · 64-bit · MIT License