Why such a delay before the first rendering of the page?

Question

HTML

What could be the reason for such a delay before rendering the page?

Answer 1

Waiting = 1.18s
This is HTML rendering on the server (PHP), it's certainly not fast for you, but it's not that slow either.
And now the server is sending (and the browser is downloading) this generated HTML, and this is abnormally slow. Most likely the channel is shit.
Among other things, 127Kb of HTML is also an abnormally large amount, the DOM is hellishly huge there, plus scripts and styles, hence the same amount of time is spent on parsing and rendering.

Answer 2

What you pointed to is the execution time of the server side code. And by the way, the size of the html returned by the server is somehow abnormally huge.

Answer 3

The server takes a long time to return the HTML of the main page.