Lighthouse 10 Improves PageSpeed Insights Scores For 90% Of Pages via @sejournal, @martinibuster
Google Chrome announced a big change to Lighthouse 10, which sees the removal of the Time To Interactive (TI) score. Tests indicate that a majority of webpages will see an improvement to their performance scores, with more than half of webpages experiencing an improvement in scores by over 5 points.
Time To Interactive – TTI
The Time To Interactive score measures how long it takes for a page to become interactive for site visitors. The score is a multi-step calculation that measures the resource loading to determine when a user can do things like click a button or use the site navigation.
The reason Time To Interactive is removed is because other metrics, Largest Contentful Paint (LCP), Speed Index, and Total Blocking Time together are better measures of when a webpage feels loaded.