Optimizing Cemu (OpenGL)

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In this section, we make sure that Cemu is running as fast as it can. This involves changing some options in Cemu and your GPU settings to make sure we’re getting the best performance.

To continue, we need to know what GPU your system is using. If you don’t know what type of graphics processor you have, open the Settings app on Windows 10. Then navigate to System -> Display -> Advanced display settings.

Under your display name, it should say Display #: Connected to [GPU]. This should start with Intel, AMD or NVIDIA. That will tell you what brand of GPU you have.

Please select your GPU brand below:

Ensure you are running the latest drivers and that your GPU supports OpenGL 4.5+.

OpenGL 4.1 to 4.4 will work, however you may experience graphical issues.

GPU Settings

  1. Open NVIDIA Control Panel
    • You can access this by right clicking on your Desktop
  2. Make sure you are on the Manage 3D Settings section
    • This is the default section when opening the control panel
  3. Go to the Program Settings tab
  4. In “1. Select a program to customise” click Add -> Browse
  5. Navigate to your Cemu folder and select the Cemu executable
  6. Set “Triple Buffering” to On
  7. If you have a compatible display, enable G-Sync

Cemu Settings

  1. Open the Cemu main menu
  2. Click Options -> General settings on the top bar
  3. Navigate to the Graphics tab
  4. Set “VSync” to Off
  5. Navigate to the Audio tab
  6. Under General, change “API” to XAudio2

Ensure you are running the latest drivers and that your GPU supports OpenGL 4.5+.

OpenGL 4.1 to 4.4 will work, however you may experience graphical issues.

Cemu Settings

  1. Open the Cemu main menu
  2. Click Options -> General settings on the top bar
  3. Navigate to the Graphics tab
  4. Set “VSync” to On
  5. Navigate to the Audio tab
  6. Under General, change “API” to XAudio2

Ensure you are running the latest drivers and that your iGPU supports OpenGL 4.5+.

OpenGL 4.1 to 4.4 will work, however you may experience graphical issues.

Cemu Settings

  1. Open the Cemu main menu
  2. Click Options -> General settings on the top bar
  3. Navigate to the Graphics tab
  4. Set “VSync” to On
  5. Navigate to the Audio tab
  6. Under General, change “API” to XAudio2

Shortcuts and Drivers

  1. Ensure you are running in maximum performance mode.
  2. If a game isn’t working, consider creating a shortcut to Cemu and add -legacy to the target
    • This may cause other games to stop working
  3. If it still doesn’t work, update your iGPU driver.
  4. If the issue still persists, it’s likely that game won’t work for your iGPU, or it is too old to run

Cemu should now be running the fastest it can on OpenGL. There are even more ways to improve framerates in Breath of the Wild. Follow our optimization guide for more info.

Continue to Optimizing Breath of the Wild (Optional)