Queries time out to Postgres

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1

I have copied the metabase jar onto a ubuntu 18.04 box.
i started it and went through the setup (as in, i connected a db).
The UI read my tables from db and offered me to create dashboards. However, no data out of the tables was ever read. If i try to submit queries, they fail (as in, time out).

This is Postgresql 9.6.3 (RDS in AWS).

The user creds i used work when used in pgadmin, and metabase was able to read table names, so something must be working?

2

This seems to be caused by the automated dashboard trying to auto-analyse one of our tables - if that starts, the whole metabase hangs and no queries are processed. if we skip that and just run questions, the system works.