Why do browsers start playing animated GIFs before they are fully loaded?

Question

Browsers

And is there any way to manage it?

Answer 1

They just show efforts so that they are not changed to another browser.
The opera starts to show the GIF again (before, now I don’t sit on it), if it has disappeared from the displayed area, it’s convenient at times.

Answer 2

There is such an option to delay the launch of the GIF until it is fully loaded.