Currently Inventor will automatically update the entire assembly file (which could take 20 mins) if certain actions are taken like deleting a part or grounding a component. This creates a huge headache when working with large assemblies (60,000+ parts) and especially when assemblies are just in there just for reference. If I just want to delete or place a component from a large assembly, why should the entire assembly need to update?
Defer update does not work.