A few seconds make all the difference. Google's own studies show that the likelihood of a visitor abandoning a page rises sharply as load time goes from 1 to 3, 5, or more seconds. In other words: every second of delay is money walking out the door.
Google created a set of metrics called Core Web Vitals to measure the real loading experience of a page — how fast the main content appears, how quickly the page responds to the first interaction, and visual stability (preventing elements from "jumping around" while the page loads). Since 2021, these factors directly influence search result rankings.
An overloaded or low-quality hosting server, heavy unoptimized images, and lack of caching are the most common causes. The good news is that most of this is solved with simple choices: hosting sized right for your site, compressing images before publishing, and a plan with enough resources for the traffic you actually get.
Performance isn't just a technical concern — it's a revenue concern. Every improvement in your site's speed tends to show up both in more sales and in a better Google ranking.