Timeout when fetching assets

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Expected Results: Page returned with assets in that repo
Actual Results: ERROR: (ID b9cda9cc-40f3-4899-b9f6-8814a7aec20c) java.lang.IllegalStateException: Timed out reading query result from queue 417ff699 after 60 seconds and all CPUs sit on 100% even after the timeout is returned in the browser.

Our production nexus is still Nexus 2 and we are hoping to migrate to this Nexus 3 instance in the near future. There is some data there from a sync job we did some time ago.