# Important settings for Windows and Nvidia Control Panel **URL:** \ **Category:** Announcements\ **Created:** [October 25, 2023, 2:40pm UTC](https://forums.chaos.com/t/important-settings-for-windows-and-nvidia-control-panel/116844 "2023-10-25T14:40:26Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![Muhammed\_Hamed](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/muhammed_hamed/32/73779_2.png) [@Muhammed\_Hamed](https://forums.chaos.com/u/Muhammed_Hamed)\ **Post date:** [October 25, 2023, 2:40pm UTC](https://forums.chaos.com/t/important-settings-for-windows-and-nvidia-control-panel/116844/1 "2023-10-25T14:40:26Z")
**Nvidia Control Panel Settings** ​, - The following settings are key in getting the expected performance out of V-Ray GPU, also discussed in my post about [installing the recommended Windows drivers](https://forums.chaos.com/forum/v-ray-rt-forums/announcements/1185749-installing-the-recommended-windows-drivers-for-v-ray-gpu-on-windows). Note, Performing a Clean Install of drivers resets all settings to their defaults, so you will need to change the settings every time you install a driver. - launch the **Nvidia Control Panel** from Start menu and click on the **home button** you will verify the version of drivers you have installed. ![Screenshot_2023-07-11_120000.png_ex=662f61c2&is=662e1042&hm=ac691634df79d3a85792ef886d505874a2ebd4330061907c1d3ad9b8acc9da20&.png](https://europe1.discourse-cdn.com/chaosprd/original/3X/3/a/3ac3b464b2b0514017352cce5f500d353119120f.png) - Click on **Manage 3D Settings** , Scroll down to **Power Management Mode** and change it to **Prefer Maximum Performance** (this slightly increases the power draw of the GPUs in idle state) this is very important to avoid performance issues with Vantage and V-Ray GPU). Click on **Apply Changes** ![Screenshot_2023-07-10_125253.png_ex=662f9259&is=662e40d9&hm=dfc246b09717fadc07eda2eedc1b5d51d7e313a693a29a893c79712a4ebc5417&=&format=webp&quality=lossless&width=1237&height=941.webp](https://europe1.discourse-cdn.com/chaosprd/original/3X/a/a/aa7bf8d6a9faa0e970330ef8ef9d451a9a3fffe7.webp) - 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 application) and Click on **Apply Changes** ![Screenshot_2023-07-10_125222.png_ex=662f9259&is=662e40d9&hm=3af2b729d82946f7e730cc95fd29bdade13cc343a38f96d6476ddeed35ac905c&=&format=webp&quality=lossless&width=1320&height=980.webp](https://europe1.discourse-cdn.com/chaosprd/original/3X/6/9/69f2d19eba9fab0abdd75adfcdf54645cbb7e753.webp)     ​​ - Make sure [ECC State](https://forums.chaos.com/forum/v-ray-rt-forums/announcements/1207563-ecc-state-for-nvidia-gpus-error-correcting-code) is **turned off(empty checkbox like the screenshot)** for all your GPUs, ![](https://forums.chaos.com/filedata/fetch?id=1207564&d=1714473301) **Windows settings,** - We recommend enabling **Hardware-accelerated GPU scheduling** option in Windows 10 and 11(enabled by default in Windows 11) This will free up VRAM accessible to V-Ray GPU. The option is available Under **System, Display, Graphics, Default Graphics Settings** Note, This option requires a system restart to take effect ![Screenshot_2023-07-11_120731.png_ex=662f6377&is=662e11f7&hm=336207247e1a5cca8f6bf901eb0c07ba9d701d0b831b21d30ace3fb4661d3a64&=&format=webp&quality=lossless&width=1440&height=1118.webp](https://europe1.discourse-cdn.com/chaosprd/original/3X/4/1/41e158fb54fbea70fb13fddfc4796432e7f509f0.webp) If you have questions please let me know Best, Muhammed ​