I updated to 1.6.5 from test flight. Switched back to the Bitcoin Atlantis federation where I had 9 esats. I successfully made a 7 sat payment from the federation (which I couldn’t do prior to the update).

I also noticed as soon as I switched to the Bitcoin Atlantis federation the entire wallet got noticeably slower. As soon as I left the federation the wallet speed went back to normal. 

 There's another open issue around payment info lookup that's causing slowness with federations. Thanks for testing this!