To know which GPU Substance Painter is running on, you can check the log file.
Monitor Cables Configuration
On Windows the GPU assigned to an application depends of the monitor on which the application is running. This is because the monitor cables are linked directly to the output of the GPU itself. Substance Painter may start on the wrong GPU therefore if the monitor on which it starts is linked to the graphics output of the motherboard instead of the one from the graphic card itself. In that case, Windows is likely to use the integrated GPU rather than the dedicated GPU.
To solve this issue : simply fix the cable configuration by un-plugin the monitor linked to the motherboard and then linking it to the GPU outputs instead.
Incorrect GPU Driver Installation
If the GPU drivers are not properly installed Substance Painter will be unable to reach the dedicated GPU and it will have to fallback on the integrated GPU instead.
To solve this issue : uninstall the current GPU drivers, perform a cleanup and then reinstall the GPU drivers after a reboot of the computer.
Nvidia GPU driver profile setting
On some computers such as Laptops Substance Painter main run on the integrated GPU instead of the dedicated Nvidia GPU by default. With an NVIDIA GPU, the switch to the right GPU depends on application profiles. If an application does not have such profile, you can assign one manually.
To solve this issue :
- Right-click on the Desktop and select NVIDIA Control Panel or Navigate to the Control Panel and search for NVIDIA Control Panel
- Under 3D Settings, go to Manage 3D Settings
- Under the tab Program settings add a new profile for Substance painter
- Change the preferred graphics processor setting to High-performance NVIDIA processor
Windows Performance Setting
Windows may have set the wrong GPU setting for Substance Painter because of the default performance and power consumption settings.
To solve this issue : follow the step by step below to override the default GPU configuration.
- Open the display settings by right-clicking on your desktop :
- Navigate to the bottom of the window on the home and click on "Graphics Settings" :
- Click on the "Browse" button and locate the Substance Painter executable :
- Once Substance Painter has been added, click on the button "Options" :
- Choose the setting "High performance" and click on the "Save" button