Google confirms using the Page Layout filter
Google still uses the filter Page Layout, launched in 2012. About this said the representative of the search Garry Illyes in response to a question from webmasters on Twitter.
yes, it's still important
— Gary Illyes
The Page Layout algorithm analyzes the page template and the content that the user sees immediately after clicking on the page from the search results (the ratio between ads and actual content).
Not to fall under this filter, you need to make sure that is visible without scrolling of the page is not overloaded with ads, and the user can easily find on the page the original content.
Pessimized sites will be able to get out from under the filter Page Layout during the re-scanning of the site, provided that their owners have made the appropriate changes to the page template. How quickly reindex will happen depends on a number of factors. In particular, the number of pages on the resource and how technically well-done website.