Plex “on deck” not updating

My Infuse does not sync with Plex. When I open Infuse, the “recently added” and “on deck” is about a month old. When I force a “scan for changes”, it takes ages and in the end it overloads the API on my Google Drive where my Plex server is hosting the media, and locks me out for 24 hours.

How can I make Infuse show the correct Plex progress?