In order to improve the pagespeed score, I tried a few change in the _config.scss file: replace $font-src: 'https://fonts.googleapis.com/css?family=Neucha|Patrick+Hand+SC' !default; by $font-src: 'https://fonts.googleapis.com/css?family=Neucha|Patrick+Hand+SC&display=swap' !default; With this the FOIT disappeared and the font-display audit succeeded.