Another example: https://developers.google.com/speed/pagespeed/insights/?url=https%3A%2F%2F24stoma.ru%2Fimplantacija-zubov.html
URL: https://24stoma.ru/implantacija-zubov.html
This article has a lot of img and 3 youtube videos (iframe)
Two weeks ago, PageSpeed Insights showed that “lazy load” is used for img and iframe (there were 50 points for mobile version and 90 points for PC). But, perhaps, PageSpeed Insights has changed its algorithm: now the service does not see “lazy load” (30-35 points mobile version).
Can the plugin work be affected by enabled caching on the nginx server (expires 7d)?