WebPagetest Forums

Have an interesting result here where the 'first interactive' time seems to come WAY too early from looking at the 'Page is Interactive' graph.
That graph shows a lot of main thread blockage all the way past 50 seconds with no contiguous 5 second interval between the red lines. Here I'm assuming each red line is 100ms worth of main thread blockage and the definition of the TTI metric is 5 contiguous seconds of no blockage.
thanks!!
Mark

Here is another example: https://www.webpagetest.org/result/19010...view_step1
How can first interactive be at 32s?? Looking at the 'Page is Interactive' chart there is a ton of activity on the main thread between 30-45 seconds - there is no 5 second period of inactivity there - especially around 30 seconds.
How can this be??? thanks!!