I'll be giving a talk about what you can do to get your site to load faster without using AMP in Portland, Oregon on February 4th. https://pnwdrupalsummit.org/2018/sessions/how-get-perfect-10...

Long story short 100/100 with page speed is possible with most sites; further optimize for Speed Index by using rel="preload" for assets above the fold. What else am I missing?