Usually when a new system/console comes out it takes a while for developers to get used to its quirks and figure out optimizations and hacks to eke out whatever little performance gains you can under the constraints of the hardware.
One of the first games for the PS2 was Jak and Daxter: The Precursor Legacy, developed by Naughty Dog. What is remarkable is that Gavin had figured out that a lot of the assets and textures etc. that needed to be available in order to start the game could be loaded while the typical splash screens were displayed at the beginning.
I never noticed it when I played the game years ago, but I picked it up a while back and had a "wait, what?" moment when the PRESS START button appears, and instantly upon pressing it you're launched into the game and can interact with the world. No loading screen, no cutscene, just straight into the game.
Anyway, mad respect for a small team that managed to produce some of the most beloved games from that era.