When upgrading, Asset Radar is enabled. The web interface helpfully gives you a link to learn more about it, but contains the phrase "Once this feature is set to Enabled or Logging Only" which lead me to believe it would be disabled by default.
It was not disabled and I don't want to use this feature. Network seemed slower this morning, but it may have just been a coincidence and I discovered it defaulted to Logging Only.
It should have been disabled initially.