MET

Manual / Troubleshooting

Large Assemblies Run Slowly

Tips to open, rotate and edit assemblies with thousands of components faster.

Edition: Standard+

Tips

Method Result
Use Shaded mode instead of Shaded + Edges Less edge drawing
Turn off Shadows, Ground Reflection and Realistic Render Faster drawing (large assemblies turn shadows off automatically)
Purge (Skip Loading) components you do not need (right-click a component) The component is not loaded
Hide All, then Show only the part you work on Fewer components displayed
Import a multi-solid STEP file as a Single Part when you do not need inner joints Lighter part, easier to mate
Use sub-assemblies instead of placing every component in the main assembly A sub-assembly is a rigid body, so fewer mates to solve
For drawings of a large assembly, use Detail: Auto / Draft Faster drawing creation (600 or more components use Draft automatically)
Delete or Suppress conflicting mates (red) The solver runs faster
Fix the main frame (for example the machine frame) before adding mates A new mate solves only the parts it affects; fixed parts act as boundaries, so the whole assembly is not pulled in

Assembly Explorer: FIXED / FLOAT status badges
Assembly Explorer: FIXED / FLOAT status badges

Note: Editing or deleting a mate does not recalculate the whole assembly by itself. Click Regen when you want to re-solve every mate.

Note: If a mate takes a while to solve, a Solving mates window with a Cancel button appears and the window stays responsive. Cancel discards the new mate. See Add mates.

Try it: Speed up a four-seat office desk pod

Scenario: a desk pod for four people with thousands of screws and cable trays rotates slowly, and you only need to work on one drawer unit.

  1. Switch to Shaded and turn off Shadows and Ground Reflection.
  2. Right-click the cable trays you do not need today › Purge (Skip Loading).
  3. Hide All, then Show only the drawer unit you are working on.
  4. Group each desk into a sub-assembly, so the main assembly solves 4 rigid bodies instead of hundreds of mates.
  5. Delete or suppress mates shown in red, then click Regen once.
  6. For the drawing of the whole pod, use Detail: Auto / Draft.

Challenge: Time how long a full rotation takes before step 1 and after step 5.

See also