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A licencee reports slow scrolling in the Save Content dialog when working with hundreds of items marked as dirty.
From profiling it appears that PackageTools::GetObjectsInPackages is the main offender, and is called from FPackageItem::GetTypeNameAndColor. (Attached profile data was gathered from SleepyCS).
We should consider caching this information on FPackageItem and find a faster method for gathering this data - possibly from the Asset Registry.
1) Modify code to mark package as dirty on load (in LoadPackageInternal)
2) Load QAGame RenderTestMap
3) Attempt to exit editor to invoke Save Content dialog
4) Scroll up and down items.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-23888 in the post.