Digital Foundry has put Nintendo Switch’s loading times to the test, and as the headline states, your best bet may be using the console’s internal storage.
Again, loading with internal storage was faster with MicroSD cards second, and the game cartridge last. You can see the results for yourself in the chart below.
Digital Foundry said there’s a “five second difference at worst” in Zelda when loading from the cartridge. It’s a large game, and this could likely be the case for future titles which are rather massive, such as Skyrim.
You can read the full, detailed report through the link.