Inefficient queries on MongoDB

[Floppy]

Pasted from alert email from MongoDB Atlas:

Query Targeting: Scanned Objects / Returned has gone above 1000 The ratio of documents scanned to returned exceeded 1000.0 on , which typically suggests that un-indexed queries are being run. To help identify which query is problematic, we recommend navigating to the Profiler tool within Atlas.

This is probably giving us a performance hit, but once we change to PostgreSQL it'll probably be irrelevant. Still, filing it here for now.