When building a website, there are some thing that you might want on your website but if you include them, you'll have a lower Google PageSpeed score. When that happens, you need to make a choice and decide if you want that feature or if you want a higher score.
These things include having social media feeds, chat services or any external scripts running. Since we cannot optimize those images and since we cannot control how another server works, this hinders our ability to optimize your website for a passing Google PageSpeed score.
It also includes running a WordPress Multi-Site Network (also known as WordPress Multiuser and WPMU).
When websites use any external script, we may not be able to achieve a passing Google PageSpeed score. We can optimize with these items turned off and show you a passing score if you like.
This article explains this in more detail, so please do read it over: