Drag and drop from Pub Manager is slow

In Pub Manager 14SP2, I have a user experiencing a very long time to drag and drop a topic or map from Browse Repository to the publication.

I have had them reboot, clean local storage, and reset Pub Manager to the OOTB configuration. Nothing has worked. It is taking up to 30 minutes to move a topic into the publication map.

Any ideas would be helpful.

Thanks.

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