AutoCAD 2011 – from an Autodesk Discussion Board

Source Material from an Autodesk Discussion Board: a pdf.
————————————————
IDEAS FOR SPEEDING UP AUTOCAD
Last updated 11/05/09
First things first, if you start having trouble, close AutoCAD, reboot
your computer, restart AutoCAD and then see if that made a difference.
DRAWINGS:
Is the slow down in all files or just one? Start a new drawing by typing .new and see if the resulting
file is ok or not. If ok then the existing file is the problem. Run Recover on that file to see if that
helps, see other tips further down.
Once a slow drawing is up check to see what fonts are being used or called. If you don’t have one
on your system substitute in STYLE for an AutoCAD shx font. Do this for other font names you
don’t recognize to see if the helps speed up the drawing. Change all TTF fonts to SHX to see what
difference it might make.
Does the drawing contain XREF files? Close the current drawing, open
each XREF file and audit and purge each one. Then go back to your
drawing. In 2010 you can use the RECOVERALL command to also include
XREFs.
Check in layer manager to make sure you don’t have 100’s of layer
filters, if so delete them.
Check the scale list to make sure you don’t have 100’s of scale lists.
2009 does this for you automatically, 2008 use scalelistedit, reset.
Groups can cause problems, see link at bottom of page.
Don’t use true type fonts (TTF) and see if that helps, lots of those
will slow things down. If using TTF, turn hardware acceleration off.
Set Shademode to 2D, do this in each layout, each viewport, and in Model Space.
Use ‐purge, Regapps, purge all. In 2010 also use –purge, z, and –purge, e.
Large file size
http://usa.autodesk.com/adsk/servlet/ps/item?siteID=123112&id=2886521&linkID=9240617
Ideas for removing blank text, points in a drawing, anonymous groups
HARDDRIVE CLUTTER:
Clean out the temp folder (%temp%)on your computer, this can have a big impact if it is filled with
hundreds or thousands of files. Remove all the temp internet files and cookies on your computer.
I recently helped clean up a computer and it had 5,000 cookies on it.
Finally run the diskfrag program, even the one that comes with Windows works well enough.
CPU or RAM OVERLOAD:
What other programs are running? I have Inventor and Mech 2009. If I run Inventor and then
AutoCAD, AutoCAD will be very slow and “jerky”. Rebooting and only running one or the other
makes a big difference. So after a reboot only open AutoCAD and see if it runs better. Add other
programs one at a time and watch for a difference.
AUTOCAD SOFTWARE ‐ VARIOUS SETTINGS:
Do you have another version of AutoCAD installed? If so you must go through the File path
statement in that version as well. And are you using the same profile? Start AutoCAD without a
profile (copy the shortcut on the desktop, in properties remove the “ /p (profile name)” switch and
then use that shortcut to start AutoCAD.
If you don’t need draworder then set draworderctl to 0.
Turn DYNamic input off as a test, see DYN toggle at bottom center of screen.
Set SAVEFIDELITY to 0 unless you are saving down to lower version numbers.
3D – use BREP command to remove the history from selected solids. Read help to understand the
impact to doing this.
Properties causes slower operating speed and some have recommended setting qpmode to 0 (off).
Run with Properties turned off as well as QProperties off as a test.
Go to File>Open>History, are there hundreds or thousands of files listed? Delete most of those
short cuts keeping only the last 20 or so.
Make sure all the printers listed in the plot dialog actually exist.
This goes for printers as well as printer.pc3 files.
Create a file of 0 bytes in size, called acad.dll and place it in the
same location as acad.exe if one doesn’t already exist.
Options> Open and Save > Turn off display digital signature information.
Go through the file paths in Options>Files and make sure every single path listed actually exists, be
meticulous. Unplug the network cable and see if the problem goes away. If so, you may need to
get a copy of FILEMON from the net and use that to find out what AutoCAD is trying to do. See
below for a link with a great explanation on how to use FILEMON.EXE.
Change the cursorsize from 100 to 10 or 7.
http://usa.autodesk.com/adsk/servlet/ps/item?siteID=123112&id=2884947&linkID=9240617
The support file search path is stored in the Windows registry as a text string, with each path
separated by a semicolon (;). This registry entry for support paths is also shared by the Windows
operating system. The problem occurs if the combined support path is very long (over 800
characters).
To avoid this problem, restrict the support file search path to paths that are required by the
software. To check the length of the support file search path for the Autodesk software, enter the
following AutoLISP® expression on the command line:
(strlen (getenv “ACAD”))
To resolve the problem, shorten either path, and then close and reopen the program.
The above will also be related to commands not being recognized.
Dock the command line in the lower or upper portion of the autocad screen, do not have it
floating. If the command line is not showing it can still have an impact if it was floating prior to
being made invisible. Hit Ctrl+9 to bring it back, if it is floating then dock it at the bottom of the
AutoCAD screen, then hit Ctrl+9 again.
“In AutoCAD 2009, 2010, enable the AutoCAD Classic workspace.
Dock any desktop element and make sure that none of the palettes are floating.
Turn off any unused palettes.
Update the graphics driver.”
Turn transparency off on tool palettes. Hover over a palette and right click, pick transparency,…
Use Cleanscreen (CTRL+0 toggles it off and on) to remove all palettes,
etc. and see if it makes a difference.
Close the new layer manager in 2009 and higher. Use LAYERDLGMODE set to 0.
TREEDEPTH at ‐2520 and SORTENTS at 20, or turn SORTENTS to 0 if a
large file and using draworder.
Manual Tune video driver ‐ Options, System, Performance Settings, Manual Tune, Driver Name
pulldown. Which one is showing? For vista Direct3D might be better. For XP pick the driver for
your card, mine is from nVidia so I have nvd3d9.hdi picked. Pick the Enable hardware acceleration
to see if that helps. Further down move the sliders over to the left.
Video Driver updates ‐ check for newer drivers for your card.
Viewres still affects the speed of the computer, contrary to what you may have been told.
Autodesk has confirmed this to me personally, especially so with MEP. Set it to 500 instead of the
maximum setting. Set cursor size to 10 or less.
Set ltscale to the proper value, a large drawing with linetypes will slow down when in MS with
ltscale set to 1 or a small value.
Too many fonts ‐ remove fonts that you don’t actually use, this will
speed up AutoCAD and the OS.
OS SETTINGS:
Does your computer have Blue tooth? A user reported a blue tooth phone placed near the
computer slowed the computer to a crawl, they moved the phone away and it sped back up.
Set the virtual memory paging file to a larger size with a min and max rather than letting windose
handle it for you. XP ‐ Control Panel, System Properties, Advanced, Performance Settings,
Advanced, Virtual Memory Change, Custom Size, Initial size = 3X ram (3GB ram = 9GB paging file
size), maximum size = 4X ram. Go larger if you have the hard drive space.
In the same area as immediately listed above, instead of Advanced tab pick Visual Effects tab, pick
adjust for best performance, then if you must go to custom and pick the few settings you can’t do
without.
Lower hardware acceleration setting, in Control panel, Display, settings, advanced, troubleshoot,
move the hardware acceleration slider to the left one click and try it out, keep moving it right and
watching for a change in performance and also fewer crashes. Find a setting you can live with.
ANTIVIRUS SOFTWARE:
Antivirus software ‐ disable and see if there is a difference in performance.
If the antivirus software allows you to, set AutoCAD to be ignored.
NETWORK:
What network software is being used?, there have been problems reported with some Novell
server systems, as well as others. If posting in the new groups be sure to mention the server
software.
Check the network card speed, is it 10/100 or a 1000? If your network is 1GB then a 1GB card will
speed things up.
OTHER IDEAS:
Go to autodesk.com web site, pick Services and Support, use the Knowledge Base and search on
“slow”, “delay”, etc.
filemon.exe how to use it to find where autocad is freezing http://cadpanacea.com/node/71
Disable digital signatures
1‐On your desktop, right‐click on any Autodesk Icon (i.e.: AutoCAD) and pick “Enable/Disable Digital
Signature Icon”.
2‐In the “Signature Validation Options” dialogue box, uncheck “Display digital signatures and
display special icons”.
3‐Restart your computer.
Full details at this link.
http://themadcadder.blogs.com/my_weblog/2005/01/diable_the_digi.html
Get rid of blank text
http://lynn.blogs.com/lynn_allens_blog/2007/09/an‐almost‐autum.html
In 2010 use –purge, e
Clean empty groups and unnamed groups out of drawing.
http://forums.augi.com/showthread.php?t=50895
Various tips from an AutoCAD expert.
http://blog.jtbworld.com/2008/09/autocad‐2009‐slow‐performance‐tips.html
Disable the communication center. From Tony Tanzillo
In AutoCAD 2010, you can disable the InfoCenter toolbar by opening the
registry, and going to the following key:
HKEY_CURRENT_USER\Software\Autodesk\AutoCAD\R18.0\ACAD-8001:409\InfoCenter
In that key there’s a value with the name “InfoCenterOn”.
Changing that value from 1 to 0 will disable the InfoCenter toolbar.
Use regedit to open this key:
HKEY_CURRENT_USER\Software\Autodesk\AutoCAD\R18.0\ACAD‐8001:409\Recent FileList
Make note of how many files in the list are at remote locations that are offline.
If you find a lot of them, that’s probably the issue.
from Tony Tanzillo, Autodesk.com NG’s

July 26, 2010 | Categories: Performance Tweeks | Leave a comment