Comments (2)
bripkens
commented on June 4, 2024
You are most likely experiencing what our customers are experiencing as well with real-user data: https://www.instana.com/docs/website_monitoring/faq#why-are-some-website-metrics-not-always-available-andor-have-weird-values
Excerpt:
This in turn can mean that statistical aggregations across a set of observations result in smaller LCP than FCP values. While this is impossible to observe for a single page load, it can occur for a set of page loads given a difference in web browser support as the following examples shows.
Observed First-Contentful Paint values: 1000 ms, 1400 ms, 1600 ms. Mean: 1333ms.
Observed Largest-Contentful Paint values: 1000 ms, UNSUPPORTED METRIC, 1600 ms. Mean: 1300ms.
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meikidd
commented on June 4, 2024
I tried to add a filter "browser == Chrome", and then there is no more FCP > LCP.
@bripkens Thank you for your explanation.
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