It’s a lot faster than the PS4 but it’s still slow in comparison with Switch games. It’s understandable given the difference in file size/game “quality” but I don’t want to wait more than a few seconds.
IME, it depends on the game. Mario Kart 8 and Mario Odyssey load really quickly, for example. All the Lego games seem to take forever to load tho, it's quite frustrating!
