# Large assembly mode


You can use large assembly mode to improve the performance of large assembly models.

How to open:

  • Automatic opening: Automatically judge the size of the model when opening the model, pop up a prompt for large assembly, and choose whether to open in large assembly mode.
  • Manual opening: Right-click the assembly document in the document list and select the "Open in large assembly mode" option to manually open the assembly document in large assembly mode.

In large assembly mode, feather display is added to the instance icon, indicating that the instance is currently in lightweight display state.

Right-click the instance in the instance list (multiple selection is supported) and click "Restore lightweight" to switch the instance to the precise display state. The model that has been accurately displayed cannot be switched to the lightweight browsing again.