Updates On Google Mobile Friendly Algorithm 2016
Google announced on the Webmaster blog that they are going to be boosting the effects of the mobile friendly algorithm they launched back on April 21, 2015.
The algorithm is a page-by-page signal, so it can take some time for Google to assess each page, and that may be why it will be a gradual rollout. Also depending on how fast Google crawls and indexes all of the pages on your site, the impact can be slow to show.