Visual Basic Applications run very slow in AutoCAD 64bit

If you use VBA inside of 32bit AutoCAD you will have noticed that it is around 1000x times slower when running the same VBA code inside of 64bit AutoCAD.

This is because AutoCAD 64bit ships with the 32bit VBA DLL in a separate out-of-process executable rather than loading the VBA DLL inside of AutoCAD itself. Therefore, a lot of marshaling is incurred communicating between the out-of-process VBA executable and 64bit AutoCAD.

Other issues you may be seeing: Run-time error ‘429’: ActiveX component can’t create object

The Solution:

The best solution is to install 32bit AutoCAD on 64bit Windows, here are the affected versions along with their solution text…

Copyright 2017 (c) Longbow Software

Installing 64bit AutoCAD 2011 on Windows 10

AutoCAD 2011 was not designed to run in Windows 10 (Windows 10 was released after AutoCAD 2011) and inevitably you will run into issues such as the infamous Ribbon crashing issue, slow startup problems, text scaling issues, etc.

You can automatically solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD 2011 installation so that you can be up and running again… Just follow these easy instructions:

How to install 64bit AutoCAD 2011

  1. First, uninstall any existing AutoCAD 2011 installations on your computer
  2. Next, obtain the Longbow Converter App (V11.15 or higher), download here
  3. Start the Converter tool
    1. Pick the 1st tab named “AutoCAD 32bit Installer Converter
    2. Using your mouse, right-click the tab text “AutoCAD 32bit Installer Converter” so that it changes to “AutoCAD 64bit Installer Converter
    3. Next, using the “. . .  button, select your AutoCAD installation CD and follow the instructions presented by the Converter tool user interface.
  4. Once the conversion process is complete
    1. click Install/Run Setup to start setup
    2. Once you have completed the AutoCAD installation process…
      1. Completely close the setup program
      2. Go back to the Converter App and make sure it states “Success!
  5. Now you can run your AutoCAD as normal

Troubleshooting:

– If you are unable to activate your product, or the activation process crashes:

– If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD

Copyright 2018 (c) Longbow Software