[Knitebane]

IE on the other hand, double click the icon and it's open and loading the start page.

That is because Microsoft built IE directly into Windows.

Back when I still used Windows, there was a Mozilla option that started Mozilla in the background when Windows started.

That made it just as fast as IE.

[BigSkyFreeper]

That is because Microsoft built IE directly into Windows.

Yep. There are several programs that allow you to start them in the background, they don't pop up any quicker when loaded in the background, but they do use up resources.