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2. Expand the Model node, and click the Performance option.
The Performance page is displayed:
3. Memory. Select the Auto check box for NavisWorks to automatically calculate the maximum
memory that may be used. This will take the lowest of your available physical memory or address
space, less that required for your Windows operating system.
Alternatively, clear this option and manually enter the limit.
4. Merge Duplicates. These options improve performance by multiply instancing matching items.
Rather than storing every item in memory, if any items are the same, NavisWorks can store one
instance of them and 'copy' that instance into other positions. This is of particular benefit on larger
models, where there are significant numbers of these duplicate geometries.
The options available determine when NavisWorks should perform this merging process:
• On Convert. Merge duplicates when converting a CAD file.
• On Append. Merge duplicates when a new file is appended to the current scene.
• On Load. Merge duplicates when loading a file into NavisWorks.
5. On Load. The Collapse on Convert box can be set to alter layers shown in the Selection Set
window on loading native CAD model files. Each type collapses the Selection Set tree up to the
specified level. So None does not collapse the tree, Composite Objects collapses the tree up to the
level of composite objects, etc. This enables performance to be prioritized over structure/properties
and has the added benefit of improving streaming by cutting down the logical structure.
It should be noted that whilst NavisWorks will try to collape items to the fewest number possible, it
may be necessary to prevent collapsing in some cases to preserve model fidelity. For example if an
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