Things that can slow operation in Civil 3D/AutoCAD

Last updated: 2020-x-26

There are many factors that contribute to overall system speed which tin affect Ceremonious 3D/AutoCAD performance.

  1. Hardware (CPU, difficult bulldoze, RAM, video bill of fare)
  2. Network (cable, switches, server)
  3. Operating organisation
  4. Software

  5. Files (number, size, objects inside files, connections to other files)

The issues and solutions in this topic are not a consummate list of every possible issue, but they give a adept sampling of common issues and how to fix them.

ClosedEvent: Optimize the functioning of your AutoCAD-based program in Windows

Solution

Follow these guidelines to ameliorate your AutoCAD operation. Make up one's mind which of them provides the best results for your environment. Not all guidelines accept the same consequence on all systems, and then test and compare results.

Windows surround guidelines

  • Verify that your hardware meets or exceeds AutoCAD's minimum system requirements. See System requirements for AutoCAD.
  • When running other applications at the same time as AutoCAD, exist sure at least 2GB of RAM is available to AutoCAD.
  • Update your computer'due south graphics card driver to the latest version bachelor. Encounter How to update to the latest certified video driver.

  • Plow off all compatibility settings except for Run This Program Every bit Administrator:

    1. File Explorer > Right-click AutoCAD executable file > Properties

      1. Compatibility tab > Deselect all options except Run This Programme As Administrator

  • Stop the Windows Presentation Foundation Font Enshroud:

    1. Windows Get-go > Search for \'Services\' > Click View Local Services

      1. Services dialog box > Scroll down to Windows Presentation Foundation Font Enshroud 3.0.0.0 > Right-click > Stop

  • Delete the contents of the Windows TEMP folder. See How to delete temporary files in Windows.
  • Disable your antivirus program to see if it'south slowing down your AutoCAD software. If it is, gear up antivirus exclusions. Come across How to set up Antivirus (AV) exclusions to improve stability and functioning of Autodesk software.
  • Eliminate tiresome network performance. See Working with shared contents: eliminating dull network functioning (blog).
  • If you're using Windows vii, alter the desktop theme to Windows Basic.

Ceremonious 3D/AutoCAD guidelines

  • Toggle hardware acceleration on and off to encounter which setting improves your performance. See How to enable or disable hardware acceleration in AutoCAD.
  • Download and install the latest service pack and any hotfixes for your AutoCAD software. Meet Install Updates, Add-ons, and Enhancements.

  • Options dialog > Display tab > Turn off

    1. Evidence Tool Tips
    2. Show Rollover Tool Tips
  • Plough off Quick Backdrop QPMODE set to -1
  • Remove network paths from Options dialog > Files tab > Back up File Search Path.
  • Remove any third-political party plugins that are installed.
  • Clean up drawings with performance issues. See How to repair corrupt AutoCAD files. Examine highly nested blocks and consider exploding and purging them.
  • Use the UCSICON control to activate the origin in the cartoon. Make up one's mind whether whatsoever data or XREFs are located far from the origin. If and so, employ the Movement command to relocate the data closer to the origin. Choose coordinates shut to the origin when loading drawings via XREF.
  • Disable 1 or more than organisation variables which may impact graphics functioning: Come across Improving AutoCAD performance with older or low-finish graphics cards

ClosedIssue: Large amounts of text or hatches degrading performance

AutoCAD drawings which incorporate large amounts of text or hatches may dethrone functioning. In most cases this is due to older or low-end video cards, however, depending on the amount of data being displayed loftier-end graphic cards may exist afflicted as well.

Causes

Several new organisation variables were introduced with AutoCAD 2015. These variables will display information about option sets in the properties palette or high light objects when selected or hovered over. This may affect operation with some graphic cards.

Solution

  1. Close or Autohide the Backdrop palette until it's needed.

  2. Change the post-obit variables to off within AutoCAD (type them on the command line) until they are needed: 

Closed ANNOALLVISIBLE fix to "0"

Hides or displays annotative objects that do not back up the electric current annotation scale.

The ANNOALLVISIBLE setting is saved individually for model space and each layout.

NOTE: When ANNOALLVISIBLE is set to i, annotative objects that support more than ane scale will simply display one calibration representation.

Closed COMMANDPREVIEW set up to "0"

Controls whether a preview of the possible outcome of the command is displayed.

Notation: The SELECTIONPREVIEW system variable value is ignored when COMMANDPREVIEW is on.

Closed DRAWORDERCTL set to "0"

Controls the default brandish behavior of overlapping objects when they are created or edited.

Info: Full depict order display may slow some editing operations.

Closed DYNMODE set to "0"

Turns Dynamic Input features on and off.

When all features are on, the context governs what is displayed.

If dynamic prompts are on ( DYNPROMPT is set to ane), they are displayed when DYNMODE is set to i, two, or 3.

When DYNMODE is fix to 1, 2, or iii, you can turn off all features temporarily by property downwards the temporary override key F12

Closed ISAVEPERCENT set to "0"

Controls the amount of space allocated in DWG files for incremental saves, which affects the number of quick save operations that can exist performed before a full salve is required.

When the file relieve estimate exceeds the specified per centum, the next relieve will be a total save. Valid values tin can range from 0 to 100 pct.

  • A value of 0 means that all save operations are total saves. A full salvage optimizes the size of a DWG file, but is noticeably slower on large drawings.

  • A value of 100 increases the space available to append changes to the maximum possible. This value results in the greatest number of incremental quick save operations between full saves at the expense of larger file sizes.

Info: Saving to a unlike format always results in a full save.

Closed LAYOUTREGENCTL fix to "0" or "1"

Specifies how the brandish listing is updated in the Model tab and layout tabs.

For each tab, the brandish list is updated either past regenerating the drawing when you switch to that tab or by saving the display list to retentiveness and regenerating only the modified objects when you lot switch to that tab.

The functioning gain achieved by irresolute the LAYOUTREGENCTL setting is dependent on several factors, including the drawing size and type, the objects independent in the cartoon, the amount of available memory, and the effect of other open drawings or applications. When LAYOUTREGENCTL is fix to 1 or two, the amount of additional memory used is the size of the Model tab'southward brandish list multiplied by the number of viewports in each layout for which the display list is saved.

If LAYOUTREGENCTL is ready to 1 or 2 and functioning seems dull in general or when you switch between tabs for which the display list is saved, consider changing to a setting of 0 or 1 to observe the optimal balance for your work environment.

Regardless of the LAYOUTREGENCTL setting, if you redefine a block or undo a tab switch, the drawing is regenerated the showtime time you lot switch to whatever tab that contains saved viewports.

Closed ORTHOMODE set to "0"

Constrains cursor movement to the perpendicular.

When ORTHOMODE is turned on, the cursor can move merely horizontally or vertically relative to the UCS and the current grid rotation angle

Closed PALETTEOPAQUE set to "ane"

Controls whether palettes tin be made transparent.

When transparency is available and turned on, apply the Transparency option on the shortcut menu to fix a different caste of transparency for the current palette or for all palettes.

When hardware acceleration is enabled, the settings 2 and 3 are bachelor; when disabled, only the settings 0 and i are available.

Closed PROPERTYPREVIEW set to "0"

Controls whether you can preview the changes to currently selected objects when you curl over drop-down lists and galleries that command properties.

Info: Property previews are displayed only from the ribbon and the Backdrop palette. They are not bachelor from other palettes.

Closed QPMODE gear up to "0"

Controls whether the Quick Properties palette is displayed when objects are selected.

Closed ROLLOVERTIPS set to "0"

Controls the display of rollover tooltips when the cursor hovers over an object.

The content in tooltips can exist customized in the Customize User Interface (CUI) Editor.

Closed SAVEFIDELITY set to "0"

Controls the visual fidelity for annotative objects in AutoCAD 2007 and earlier.

This setting affects drawings only when saving to AutoCAD 2007 or before file formats.

Closed SELECTIONCYCLING set to "0"

Controls the display options associated with overlapping objects and choice cycling.

Ctrl+W to toggle the current setting on and off.

When you roll over overlapping 2d objects, options are bachelor to alert you and allow you select betwixt the objects.

Closed SELECTIONPREVIEW prepare to "0"

Controls the display of selection previewing.

Objects are highlighted when the pickbox cursor rolls over them. The highlighting indicates that the object would be selected if y'all clicked it. The setting is stored as a bitcode using the sum of the following values:

Info: The SELECTIONPREVIEW system variable value is ignored when COMMANDPREVIEW is on.

Closed UCSDETECT fix to "0"

Controls whether dynamic UCS acquisition is active when creating objects involving 3D planar surfaces.

Y'all tin can align the UCS dynamically when your cursor hovers over a planar face on a 3D solid, a planar mesh element, or a planar point cloud segment while as you lot create an object.

Info: Dynamic UCS alignment does not detect planar surface objects or 2d geometry.

Closed WHIPTHREAD fix to "iii"

Controls whether to use an boosted processor to improve the speed of operations such equally ZOOM that redraw or regenerate the drawing.

WHIPTHREAD has no upshot on single processor machines.

When multithreaded processing is used for redraw operations (value 2 or three), the order of objects specified with the DRAWORDER command is non guaranteed to exist preserved for display, but is preserved for plotting.

If yous are running Windows Vista or Windows 7, try turning off Aero past setting your desktop theme to Windows Bones.