I have run speed tests on a variety of sites, and they all say show that the google fonts requests are forcing other content to wait to be loaded. I would much rather use system fonts. I don’t need the google fonts. I have talked to web developers who agree that web fonts should be used very sparingly and never for paragraph text. Only for headers if you really wanted it.
There are 8 CSS files served from fonts.googleapis.com when I run a Pingdom test on my website, using the Agama Pro theme. These files should be combined into as few files as possible. Do you know that you can easily combine multiple font requests into a single tag, just separating the fonts with a | character? See: https://fonts.googleblog.com/2010/09/optimizing-use-of-google-font-api.html
I like the Google Fonts, so if you would make this adjustment in the Agama Pro theme, it would be great!