I am using the Navigation Timing API to get real user performance data for visitors to my company's site. I am looking at visitors who use Chrome, Firefox, and IE 9+ and focusing on two main matrices of measurement:
Page Load => (loadEventEnd - navigationStart) and Interactive => (domInteractive - navigationStart)
I have gathered a lot of data and have noticed something unexpected, IE9+ has lower page load and interactive times than chrome and firefox. Has anyone else experienced this? Does IE set the navigation timing events differently than Chrome and/or Firefox? From all the performance sites I have looked at Chrome and Firefox should be much faster at loading pages than IE. I have looked over my code and tested dozens of time to ensure I am capturing data from the API correctly and appropriately storing it in my DB. Any thoughts?
