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Author: Matt Miyamoto AutoCAD Civil 3D, AutoCAD

Recently, while doing some research for a technical support case at Ideate, I came across this article on the Autodesk Knowledge Network (AKN), “Civil 3D Performance Degradation.” Posted back in October, this article provides a fix for performance-based issues occurring across multiple users in an organization.

Per the article, some of the issues addressed are long wait times when opening files, long lags during the PURGE and AUDIT commands, and additional lags with dialog boxes appearing and plotting. The issue affects both AutoCAD and AutoCAD Civil 3D, from the 2014-2017 releases. If you’re encountering any of these issues, I strongly encourage you to check the article out.

The solution is straight forward and involves replacing the existing AECCNETWORK.dbx file with the new one provided by Autodesk.

Here are some additional things to note:

  1. You will need Administrative rights for the system to complete the process.
  2. Applications must be closed before applying the update.
  3. The update needs to be implemented on each user’s machine, at once.
  4. The performance problem will recur if an unpatched version of Civil 3D is used to open a file.
  5. The performance problem is fixed at the time a drawing file is saved in the updated version of Civil 3D, not when the .dbx file is replaced.
  6. The first time a user opens a file, the update will not be evident.
  7. Performance will greatly improve after the first save.
  8. External references need to be resaved to see the benefit of the update.

Items 3-5 are very important to remember. If the fix is not applied to each user’s machine and an unpatched version of Civil 3D opens the file, the performance problem will recur. With that in mind, I want to reiterate, the fix should be applied to each machine at once, rather than as needed. All files, including XREFs, will also need to be opened and saved before there is a noticeable change in performance.

If you have been running into company-wide performance issues, this very well could be the solution you need.

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For more information on the software solutions, training and consulting Ideate provides, please visit the Ideate, Inc. homepage.


      Matt Miyamoto
Matt Miyamoto
ENI Manager & Senior Application Specialist

Matt is an ENI Manager and Senior Application Specialist in Ideate, Inc.’s Seattle office. He has a B.S. in Mechanical Engineering and is a licensed Civil Engineer. Prior to joining Ideate, Matt worked as a civil engineer, using Civil 3D on a variety of projects including site development, roadway improvements and infrastructure design. With over 10 years of experience in the civil engineering industry, Matt now provides training, consulting, technical support, and implementation strategies for organizations transitioning to Civil 3D. Matt is an Autodesk Certified Instructor (ACI), as well as an Autodesk Certified BIM Specialist: Roads and Highway Solutions. Additionally, Matt is and Autodesk Certified Professional for AutoCAD, and AutoCAD Civil 3D. Find Matt on Twitter.