If you’re last pass at a clients website was making it responsive then these figures/statistics will give you a good reason to make another pass and focus on the performance.
I looked at 30 days worth of the site’s mobile performance data, comprising almost 4.5 million mobile user sessions. Using mPulse, I plotted those sessions on a graph that shows distribution according to load time. Then I overlaid that graph with a line graph showing the average conversion rate for each cohort of pages along that load-time distribution. Then I did the same using mPulse data for the site’s bounce rate over the same set of sessions.An excerpt from Case study: Mobile pages that are 1 second faster experience up to 27% increase in conversion rate