How to Enable DisplayLists in Catia V5 Two Environment variables have to been set: VisualizationOutput = 1 CAT_DisplayLists = 1 This can be done through the system settings: 1) Windows Open Control Panel 2) Choose System 3) Select Tab Advanced 4) Click on Environment Variables 5) Add this 2 Variables to the system variales. To verify that DisplayLists are really enabled, the output of Catia can be checked. By setting the environment variable CNEXTOUTPUT to CONSOLE, a shell is opened on Catia startup. In the section DS Optimizations the following entry should be visible: DisplayLists : Using display lists If the CNEXTOUTPUT is redirected in a file, this entry should appear in that file.