This version of Unity is unsupported.
Creating custom importers
Check the consistency of an importer

Analyze importers

Unity has tools which you can use to monitor how long Unity took to import the assets in your project and check the consistency of the import process.

Topic Description
Check the consistency of an importer Verify that the import process produces consistent results for the same asset.
Import Activity window Collect data about the amount of time Unity took to import the assets in your project.
Import Activity window reference Reference for the Import Activity window.

Additional resources

Creating custom importers
Check the consistency of an importer