Cemu, a potent WiiU emulator

The big difference is Dolphin is a open source emulator and isn't using any code from NINTENDO, they just reverse engineering the console understand how it works and made his own code
CEMU is close source so probably they are using proprietary code or/and libraries, so essentially cheating
I will never support this type of emulation, CEMU devs want to make money not preserve the console over time like PCSX2 or Dolphin. They just shifted the development schedule to make zelda works .....:bang:

 

https://www.youtube.com/watch?v=PXcYOcAXKMc&feature=youtu.be

 

getting same performance, its double buffer vsync seems causing it to dip to 20fps

 

It appears the latest build (version 1.11.3) of the emulator has multi core cpu support.

 

Experimental dual and triple core compiler support. From reading the Reddit threads for Cemu it works really well for several CPU models though AMD GPU's sees little improvement possibly due to their OpenGL core still following single threaded standards whereas Nvidia uses multi-threading. (Not exactly sure but I think OGL is single threaded by nature so AMD is simply following that, might be less troublesome in terms of compatibility but they're losing out in overall performance when compared to NVidia.)

It's still early though, some more years of development should iron out most compatibility and performance issues (It's been several years for Wii emulation, even more for older consoles and even way back as the SNES those emulators are still updated and improved.)

 

You might see the biggest difference in BOTW for example. Some claim that 4K/60fps is possible but I cannot achieve that on my machine (at least not roaming outside).