How Fast Should My Website Load? | Average Page Load Time
How Can I Increase My Website Speed?
How Loading Time Affects Your Bottom Line
Site Speed - Are You Fast? Does it Matter for SEO? - Moz
Why & how to focus on mobile page speed - Think with Google
Data Illustrates the Impact of Load Times on Conversion Rates - Marketing Charts
SpeedCurve on Twitter: "There's a powerful correlation between rendering metrics (like start render and load time) and conversion rate. Here's how to use your own data to demonstrate this to your team:
Is there any threshold page load time to get spike in the conversion? - Webmasters Stack Exchange
How 8 Different A/B Testing Tools Affect Site Speed (Original Study)
Prove Speed = Conversion – Yottaa
How Site Speed & A Slow Website Impacts Conversion Rates