Assembly Constraints take longer to create when there are Component Patterns in the assembly.
When there are active Component Patterns, and new constraints are created, NX is checking if the patterns need to be updated. It takes some additional time to perform these checks, which has an affect on performance.
Solution
Suppressing the Component Patterns in the Assembly Navigator leaves the components in the pattern visible and they can be selected, but it prevents the patterns from updating, and therefore improves assembly constraint creation performance.
This can be particularly beneficial if the work be performed in the assembly is not directly related to the existing patterns.
Note that until the patterns are unsuppressed the number of components in the pattern and the assembly constraints that control their position cannot be modified.
Notes and References
Hardware/Software Configuration
Platform: INTEL
OS: window
OS Version: n/a
Product: NX
Application: ASSEMBLIES
Version: V12.0
Function: ASSEMBLY_MODEL
Ref: 001-9287104