AutoCAD: When using External Reference file performance slows


AutoCAD: When using External Reference file performance slows.

Drawing becomes slow when Loading , Editing, Using the Reference Palette, and When  working with the Drawing.


  • Large number of References.
  • File Corruption.
  • Large number of missing fonts.
  • Missing Path.
  • Large unmaintained files (Large number of Scales, Not Purged, General Maintenance, etc.).


  • Use on a local system to see if the performance improves.
  • Set XLOADCTL & DEMANDLOAD system variables to 0.
  • Open and clean up the file by using Scaleslistedit and resetting the list, Purge the file, Clean anything that is not needed.
  • Missing fonts change to a new font.
  • Open the External Reference and check for error using the Audit command.
  • Change Absolute Paths of External references to Relative Path by right clicking in the Reference Palette.
  • Set SAVETIME Variable to 1.

About the Author

Jeff Arbogast

Manufacturing Solution Center Team Lead<br><br>Jeff is responsible for manufacturing Technical Support for both internal staff and customers. In addition to the daily activities of the support center, he helps write for the National Support Center blog, and has written online classes for the IMAGINiT training on demand site.

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