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Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
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Professional CAD/CAM tools built on Inventor and AutoCAD
Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Autodesk Support
Jul 29, 2024
Products and versions covered
AutoCAD will automatically pick the most current DirectX version if a graphics card is capable of utilizing it; However, certain system configurations can cause visual display issues or crashes. Setting a discrete DirectX may improve graphics performance:
AutoCAD 2015 - 2018, DirectX 9 or 11 (DirectX 9 is recommended by supported OS)
AutoCAD 2019 - 2021: DirectX 9 or 11 (DirectX11 recommended with a compliant display card)
AutoCAD 2022 - 2023: DirectX 11 or 12 (DirectX11 recommended for older hardware/driver combinations)
To make AutoCAD 2022 and newer use a previous version of DirectX, set GFXDX12 = 0, then restart AutoCAD.
To make AutoCAD 2021 and older use a previous version of DirectX, a system variable needs to be added into Windows. Here are the steps:
Right-click Computer or This PC and choose Properties.
Click Advanced System Settings.
Under the Advanced tab, click Environment Variables.
Under System Variables, click New.
Enter GS_DEVICE for the name and Dx9 for the value (or Dx11 if going down from Dx12).
Click OK on all the windows.
Restart AutoCAD if it was running during this process. To see what DirectX is being used within AutoCAD, use the GRAPHICSCONFIG command.
Note: Using a previous DirectX version changes the display performance in AutoCAD and can potentially affect how the program runs, depending on the type of drawings used. DirectX 11 is more capable than DirectX 9, DirectX 12 more capable than 11, etc.
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