Performance Enhancements

Learn about performance enhancements in Civil 3D.

New in 2023.2

Performance improvements have been made in the following areas:

• Increased performance for every database write operation and when a change causes the update of multiple items (for example, turning off all labels, deleting a pipe network, updating an alignment with multiple profiles or section views). Civil 3D is faster by 10% compared with Civil 3D 2023.
• Improved the performance of deleting section views and pipe networks by 50% by reducing the unnecessary refresh of the list in Prospector.
• For drawings that contain pipe networks in section view, the response time of editing the pipe network in plan or profile view has been reduced by 60% since only affected section views will be updated.
• Corridor rebuild time will be improved by 12% to 40% if corridors are using the same objects for both offset and vertical targets.
• Switching between drawings with xrefs or data references within a Civil 3D session is more efficient because the xrefs and data references are not scanned for updates during the switch.
• Improved quantity takeoff computation time response for some data from 3-5 minutes to 10-17 seconds on virtual machines, and from 11-24 minutes to 30-60 seconds on physical machines.

See also New in Labeling for performance enhancements related to labels.

New in 2023

Performance improvements have been made in several areas:

• Section views and sample line editing: Addressed performance issues with corridor section views, including known issues with corridor feature lines, pipe networks, and quantity takeoff in section views. Draw operation results are cached so they are not recreated each time other content within the section view is updated. Sample line editing will be 20% faster on average.
• COGO points: Improved the performance of creating COGO points from corridors in drawings that contain section views.
• Event Viewer: Increased overall efficiency of the Event Viewer. The previous performance of the Event Viewer database and its results dialog box had been impacting large numbers of functions in Civil 3D. Previously, the more events there were in the Event Viewer, the slower the process would become. The progressive slowdown is resolved.
• Viewport performance for section viewport type: Added a system variable AeccViewportOpt. When enabled (set to On) this system variable controls the behavior of viewports whose types are set to Section so that only the objects that appear within viewports are generated and redrawn. Previously the entire drawing was redrawn even if only a portion of it was displayed in a Section viewport. This replicates the existing behavior for viewports whose types are set to Profile.

  For viewports that are set to Profile or Section types in paper space, the following entities will be not drawn: pipe networks, pressure pipe networks, surfaces, alignments, and all DBGraph entities (for example, profile view, section view, mass haul view, superelevation view) that are not within the viewport range. To disable this system variable and restore the previous behavior, you can set it to Off.

  For more information, see AeccViewportOpt (System Variable).

• AutoCAD graphics system: AutoCAD 2023 includes a new cross platform 3D graphics system, leveraging all the power of modern GPUs and multi-core CPUs to offer a smooth navigation experience for much larger drawings. The system variable that controls this is off by default in Civil 3D. To turn it on, set the FASTSHADEDMODE system variable to On or turn it on in the Graphics Performance dialog box. For more information, see 3D Graphics.