Issue: Errors and Slow Performance of Microvellum OEM or AutoCAD

Issue: Errors & Slow Performance of Microvellum OEM or AutoCAD

When using AutoCAD, you may notice errors, slow performance, or sometimes, the application may crash. The Windows "Page File" size may cause this. This article presents the optimal setting for this file when using Microvellum OEM, or Microvellum with an AutoCAD Standard version. Before we do that, here is a short bit of information about the reason for the existence of the file.

What is a page file?

As many computer users know, Windows has an internal memory that holds and manipulates data. This memory is commonly called RAM, and the amount of it varies significantly between computers. The memory amount of RAM has a finite limit, and as the computer is doing its work, that limit may be approached. As that happens and a low memory condition is imminent, Windows will move some data out of RAM and into a hidden file on the computer hard drive known as the "Page File."

Without a page file, if the available RAM is exhausted, Windows can no longer allocate memory for data processing, and all work stops. The application crashes, and sometimes even Windows can be affected by becoming unstable. Bottom line: It is important to have a page file that is appropriately sized!


Windows usually manages the page file size, but when using Microvellum and AutoCAD, that may not be the best option. AutoCAD, in particular, uses the page file extensively for memory and processing. If Windows is allowed to manage the page file size, it may be in the process of adjusting the page file size when AutoCAD needs to access it to store information. Guess what? AutoCAD is forced to wait until Windows if finished – and thus the slow performance, unhandled exceptions, and fatal errors.

What to Do

Size your page file. Some forums or blogs with a focus on tweaking Windows suggest that you disable the page file for security reasons. We don't recommend that for the reasons discussed above. Instead, set its size as described below.

  1. Press the Windows key and enter "advanced system settings" in the search bar.

  2. Alternatively, open the Control Panel app and click the "System" icon. In the System screen that is displayed, click the link for "Advanced system settings."

  3. In the System Properties screen, click the Advanced tab and then the Settings button.

  4. In the Performance Options screen, click the Advanced tab, and then the Change button in the Virtual Memory section.

  5. In the Virtual Memory screen, uncheck the checkbox "Automatically manage paging file size for all drives."
  6. Select the C: drive and click the option button for "Custom size:"

    Enter the value Windows displays for the Recommended file size in the two boxes, "Initial size," and "Maximum size."

    If the "Currently allocated" value is greater than the "Minimum allowed" value and your remaining hard drive space (Space available) allows it, it is recommended practice that you enter the value for "Currently allocated" in the two boxes, "Initial size," and "Maximum size."

  7. Click Set, and OK.
    • Related Articles

    • Issue: Slow Performance & Crashes Associated with Antivirus & Firewall

      Microvellum and AutoCAD To minimize performance issues and crashes associated with antivirus software, we advise the following steps. Exclude these Microvellum folders:  C:\Program Files\Microvellum C:\Users\<username>\AppData\Roaming\Microvellum ...
    • Issue: Fatal Errors and Odd Behavior Within Microvellum Software

      The procedure below will fix issues such as "Fatal Error: Cannot Load Visual Lisp" and other oddities. It gives the procedure for setting permissions to full control for all Microvellum software. Right-click on the folder named "Microvellum" found at ...
    • Improving Product Library Performance

      The purpose of this article and video is to provide guidance on how to enhance the speed and performance of your Library. When it comes to Library Performance, it refers to the speed at which products are rendered in 2D and 3D, as well as the speed ...
    • Issue: Toolbox does not Load when Starting AutoCAD

      After installing Toolbox Standard and starting AutoCAD, Microvellum Toolbox may not load.  Here are some steps to resolve this issue: In your AutoCAD command line type APPLOAD and hit enter Under Startup Suite, click the Contents... button Verify ...
    • Issue: SQL Connection Error - Temporarily Change Database Type in the Registry

      Some Microvellum users may get an error related to SQL server connection issues such as: "A connection to the factory database could not be established. Please select a different configuration." Symptom: Toolbox starts up but freezes, and you're ...
    • Recent Articles

    • Toolbox Release Notes | Build 23.1.0605.641

      Report Groups Fix A fix has been made to resolve an issue that reportedly caused errors when report groups attempted to print manually. Fixes and Additions to Part Properties Toolbox Console->Part Properties/Toolbox Setup->Options 2D drawing tokens ...
    • Toolbox Release Notes | Build 23.1.0525.641

      Hardware Machine Token Tool Compensation Fix Users reported an issue that caused hardware machine tokens to produce tool compensation incorrectly. This issue has been examined and resolved. Work Order Cancellation Fix Microvellum Console->Settings ...
    • Toolbox Release Notes | Build 23.1.0523.641

      Toolbox Release Notes | Build 23.1.0523.641 Face 6/Horizontal Drilling Enhancement Toolbox Setup->Options->Toolfiles->Double-click specific Toolfile->Integrated Post Processor Settings->Settings Users will now be able to cut down on file management ...
    • Foundation Hardware Highlight: Blum

      Microvellum’s Foundation Library is built on the premise of providing our users with the best quality hardware for their construction projects, be they commercial, residential, or anything otherwise. As such, Toolbox has hardware from multiple brands ...
    • Microvellum Foundation Library Release Notes | Build 23.0517

      This update includes many changes & additions to the Microvellum Face Frame expansion. Not all users will have access to these special products. Contact your account manager for more information. Additions: Added new drawer system Rocheleau R13 EVO ...