I am looking at this waterfall and not able to understand what contributed to the 15 seconds. Is it that we don't have complete information in this case.
Please let me know of any links to understand the waterfall better.
Answer by Klaus E. ·
Hi,
It looks like the page action that you investigate contains just the HTML-request. Are on this page images, videos, css, JavaScript,..? If you do not capture these static resources you miss out the loading of them and they do not show up in the timeline. Another thing is Thrid Party Content that gets loaded. Any social media, ad, cdn content on this page? If so you can turn on Thrid Party detection and find out which ones are slow.
Cheers Klaus
JANUARY 15, 3:00 PM GMT / 10:00 AM ET