If you have an Nvidia RTX card and your Blender preference under Cycles Render Devices under the OptiX tab greys out your GPU card, then the most likely cause of this is your GPU drivers. To resolve this download the latest Studio Drivers (SD) to get your OptiX working. Note it’s not the Game Ready Driver (GRD).

1. Go to Nvidia Driver download select the specification that matches your system and click on the search button.

2. Once the Nvidia site detects a match. Download this driver. As of current the latest driver is version 442.92 for Windows 10.

3. Install the [...]