So I tried doing a before/after test of activating Hummingbird. When I went to https://developers.google.com/speed/pagespeed/insights/ to test my home page.
The report that came back said I needed to:
Leverage browser caching
Which is confusing because I'm running Hummingbird and WP Smush. Why doesn't google acknowledge the way hummingbird is doing the above?
Any advise is greatly appreciated.