Google’s John Mueller said that “rich results would not drop due to a slower response from the server.” He said this on Twitter when someone said they “lost 90% of our Recipe Rich Cards” at the same time as a “slower server response time.”

John said on Twitter “I don’t think the two are related.”

Here is a chart shared on Twitter of the drop in rich results for this site:

Here it shows a crawl stats report with an increase in slowness on the server at the same time:

Here are those tweets:

He goes on to ask:

Just a coincidence…

Forum discussion at Twitter.