While the latest Zelda game has been available in 4K for a while now on the PC via emulation, its performance wasn’t always the best. It is now.
https://kotaku.com/zelda-breath-of-the-wild-looks-awesome-in-4k-1797696064
The latest version of the CEMU emulator, 1.15.2, is now able to run the game at 4K resolution, and at framerates of between 60-100fps.
I know the game is already gorgeous as nature intended it, on the Switch. But hoo boy this is gorgeous
(This video is available in 4K/60fps, you might just need to toggle it in the video settings if your platform supports it)