Use following NVIDIA Control Panel and Windows settings to get the best performance and stability in V-Ray GPU and Chaos Vantage.
Configure NVIDIA Control Panel
1. Open NVIDIA Control Panel from the Start menu, then select Home to verify your installed driver version:
2. Go to Manage 3D settings, find Power management mode, and set it to Prefer maximum performance and click Apply. This helps avoid performance issues with V-Ray GPU and Chaos Vantage.
3. If you have multiple GPUs, change OpenGL Rendering GPU to the card you have your monitors attached to (this card will be used for viewport performance across all DCC applications) and click on Apply:
4. Make sure ECC State is turned off (empty checkbox like on the screenshot below) for all your GPUs:
Note: A clean installation of NVIDIA drivers resets all Control Panel settings to defaults. Reapply these settings after each driver install.
Windows settings
We recommend enabling the Hardware-accelerated GPU scheduling option in Windows 10 and 11 (enabled by default in Windows 11). When enabled, this will free up VRAM accessible to V-Ray GPU on your GPU(s).
This option is available under System > Display > Graphics > Default Graphics Settings:
Note: Windows requires a restart for this change to take effect.
See also: Installing the recommended Windows Drivers for V-Ray GPU.