To see a side-by-side comparison of the loading speed improvements brought by this update:
The 1.6.0 update for Zelda BotW was released to address several issues and improve the game's stability. According to the official patch notes, the update includes: zelda botw 160 update work
Assuming you legally own the game (we do not condone piracy), here is how to get 1.6.0 working on your emulator. To see a side-by-side comparison of the loading