Thanks, again, to this wonderful community for your help in getting us through the issues described at the top of this thread. I’ve taken a bit of time to boil this down to an easier-to-follow story about performance in hopes that it can save the next person to encounter similar issues.
Enjoy: https://medium.com/@ericscouten/elixir-ecto-postgres-a-saga-about-database-performance-488ba59128e
