The latest version of Cemu is out with version 1.15.10 out for Cemu Patrons, while the new version of the Wii U PC emulator dropping to the general public on July 5.
Cemu 1.15.10 packs improved performance for both Zelda: Breath of the Wild and the SNES Virtual Console, as well as the map screen in Twilight Princess HD. The new version of Cemu also includes a nifty auto updater that will be something of a convenience for those who are using Cemu a lot, but strangely this is only available for the public version and NOT the Patron-backed version of Cemu.
WCCFTech has run Cemu 1.15.10 with Zelda: Breath of the Wild with an Intel Core i5-7600K, 16GB RAM, and GeForce GTX 1080 at 4K hitting 40-50FPS easily. Not too bad at all, and it looks much better than it does on the Nintend Switch, that's for sure.