To optimize AutoCAD 2011, verify and update your graphics card driver.

To identify your graphics card driver

1. Start AutoCAD 2011.
2. At the Command prompt, enter 3dconfig.
3. In the Adaptive Degradation and Performance Tuning dialog box, click View Tune Log.
4. Review the 3D Device section for information about your system's graphics card driver and driver version.

If you need to update your driver, visit http://www.autodesk.com/autocad-graphicscard to find a certified driver for your graphics card. If you do not find one, visit your graphics card manufacturer's website. If the graphics card manufacturer does not have an updated driver, check the system manufacturer’s website. Companies such as IBM, Hewlett Packard, and Dell often supply their own system drivers.