GPU-Switcher 1.1

Changelog

[1.1.0] — 2026‑04‑21

New

• Added Restart Display Adapters tray menu option
  • Perform a full WDDM graphics stack restart, disable and re‑enable all display adapters, reload GPU drivers and reinitialize the graphics pipeline
  • Resolves rendering stutters that may occur after a display switch
  • Requires UAC elevation

Improved

• More robust device enumeration using modern Windows SDK signatures
• Improved logging around GPU reset operations
• Cleaned up WinMain signature to silence unused‑parameter warnings
• Ensured reset.cpp is included in the build target

Fixed

• Replaced deprecated GUID‑based filtering with class‑GUID filtering
• Log file is now written next to the executable instead of the working directory
• SetStartup now uses RegCreateKeyExW, fixing silent failure when the Run key does not exist
• GetModuleFileNameW return value is now validated before use
• CreateMutexW failure is now handled explicitly, preventing a potential null‑handle dereference on exit

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Requirements

• Windows 10 or 11 (64‑bit)
• Designed and tested for NVIDIA Advanced Optimus capable laptops, but this should work for any hybrid system with a MUX switch supporting on-the-fly dGPU display switching
• D3D11‑capable discrete GPU

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One‑time setup

1. Run GPU-Switcher.exe

2. Open NVIDIA Control Panel

3. Go to Manage 3D settings → Program Settings

4. Add GPU-Switcher.exe

5. Set Preferred graphics processor → High‑performance NVIDIA processor

6. Enable Automatic display switching

7. Exit and relaunch GPU-Switcher.exe

After this, GPU‑Switcher will consistently trigger a dGPU display switch on launch. Right-click on the tray icon to access extra options.

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GPU-Switcher 1.0

First release
Please let me know if this also works for non-Nvidia display adapters.

Requirements

• Windows 10 or 11 (64‑bit)
• Designed and tested for NVIDIA Advanced Optimus capable laptops, but this should also work for any hybrid system with a MUX switch supporting on-the-fly dGPU display switching
• D3D11‑capable discrete GPU

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One‑time setup

1. Run GPU-Switcher.exe

2. Open NVIDIA Control Panel

3. Go to Manage 3D settings → Program Settings

4. Add GPU-Switcher.exe

5. Set Preferred graphics processor → High‑performance NVIDIA processor

6. Enable Automatic display switching

7. Exit and restart GPU-Switcher.exe

After this, GPU‑Switcher will consistently trigger a dGPU display switch on launch. Right-click on the tray icon to view extra functionalities.