After reviewing the provided Knowledge Base articles, it appears that there are several factors that can contribute to slow saving of assemblies in Solid Edge. While there isn't a single, straightforward solution to speed up the saving of assemblies, here are some potential workarounds and suggestions that may help:

1. Update physical properties before saving: In some cases, updating physical properties before saving the assembly can help reduce the saving time (KB#PL8091731).
2. Disable 'Update on file save' option: Unchecking the 'Update on file save' option in the Physical Properties dialogue can also help speed up the saving process     (KB#PL8091731).
3. Create a new assembly and disperse: Creating a new assembly and dispersing the old one can help reduce the file size and saving time (KB#PL8068246).
4. Save the file: Saving the file can remove internal objects that refer to non-existent elements, which can slow down the opening and saving process (KB#PL8738842).
5. Use the 'Component Tracker' tool: Running the Component Tracker tool can help identify and update out-of-date components, which may contribute to slow saving times (KB#PL8064005).
6. Avoid using 'Save As': Using 'Save As' can cause unexpected behavior, such as replacing sub-assemblies in the main assembly (KB#PL8034102). Instead, use 'Save Copy As' or create a new assembly.
7. Check for and update lower-level components: Updating lower-level components and solving relationships can help reduce the time it takes to open and save assemblies (KB#PL8633721).
8. Disable Dynamic Visualization: Disabling Dynamic Visualization or enabling delayed indexing can help speed up assembly open times, which may also impact saving times (KB#PL8645933).
9. Consider upgrading to a newer version of Solid Edge: Some issues, such as slow saving times, may be resolved in newer versions of the software (KB#PL8549274, KB#PL8599012).
10. Consult the Solid Edge Performance Guide: Following the guidelines in the Solid Edge Performance Guide can help optimize system performance and potentially improve saving times (KB#PL8723196).

It's essential to note that the effectiveness of these suggestions may vary depending on the specific use case, system configuration, and version of Solid Edge being used. 

Note: The Knowledge Based articles listed in the document can be found on the Siemens Support site at https://support.sw.siemens.com/en-US.