Whenever someone says slow and inventor together in the same sentence bolted connections and derived parts are usually the first culprits. IMO bolted connections need overhauled, it is one of the biggest slowdowns inventor has, unless they have improved it in 2013?
Bolted connections, never used them as I need more control over my BOM. I make my own "Bolted connections", hundreds of bolt/washer/nut assemblies in my own library, also set up as a 'Frequently used subfolder', not a Library folder.
Derived Assemblies, if I wanted a frontal lobotomy, it would not be via Inventor.
The issue with the slow down, was and has been solved by setting my Hardware to "Compatiblity" After each service pack/update I test the performance, but it has not been fixed yet, so I always go back to Compatibility.
Other than that, there are no performance issues at all. (Except for derived assemblies, this option should be removed from the software so that users are not tempted to use it.)
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