Page load speed is important – possibly more so than ever, thanks to the dominance of mobile devices for browsing the web.
As of July 2015, [load time] was cut down to 1.7 seconds — an 85 percent improvement gained by shedding bulky features that took too long to load. With the progressive web app, article pages load in 80 milliseconds, Merrell said.
Source: “With lessons from Google, The Washington Post has brought its page load speed down to milliseconds” (Poynter)