AutoCAD in a Networked Environment
AutoCAD "Out of the Box" is not tuned to perform particularly well in a LAN/WAN environment. This tip is about ways to make AutoCAD respond faster in a networked environment.
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Autodesk's Infamous Explorer Shell Extension
Since Autodesk included the ability to add digital signatures to drawings, they've also included an Explorer shell extension that allows Explorer to display signed .DWG files with a different icon than unsigned .DWG files. When Explorer lists .DWG files in a folder, it has to examine each file to determine whether or not it is signed and then display the correct icon. This takes time. On your local workstation's folders the extra time is insignificant; however on a LAN the lag is noticeable, and across the WAN the lag can be crippling. The Explore lag occurs in AutoCAD File Dialogs as well as just plain Explorer.
![](http://photos1.blogger.com/blogger/6351/2557/320/digsig1.png)
![](http://photos1.blogger.com/blogger/6351/2557/320/digsig2.0.png)
Disabling the the digital signature icon display does not invalidate a drawing's digital signature. End users are still notified on Open that they're opening a signed drawing.
Bad Printers
![](http://photos1.blogger.com/blogger/6351/2557/320/BadPrinter.png)
Bad Links
Invalid folders in Options or bad links will also cause significant slow downs as Windows tries to follow the bad links.
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Sheet Set Manager
My company has come to rely heavily on the Sheet Set
![](http://photos1.blogger.com/blogger/6351/2557/320/CloseDST.gif)
Sheet Set System Variables
There are some AutoCAD system variables that affect the SSM:
SSMAUTOOPEN
Saved in: User settings
Initial value: 1
Automatically opens the sheet set when a drawing associated with a sheet is opened. To prevent AutoCAD from opening a DST automatically, I recommend setting this value to 0 (zero) in a multi-user environment.
SSMSHEETSTATUS
Saved in: Registry
Initial value: 2
Controls how the status data (whether sheets are open
![](http://photos1.blogger.com/blogger/6351/2557/320/RefreshDST.gif)