Asegúrate de haber instalado la actualización antes que el DLC.

Once installed, Mario Kart 8 will appear in your Cemu game library list. Step 4: Optimizing Cemu for 60 FPS and 4K Resolution

: Select Vulkan instead of OpenGL, especially for AMD or Intel GPU users, to reduce stuttering.

Repite el proceso: File -> Install game title, update or DLC .

Use Vulkan with Async Compile enabled. This significantly reduces stuttering by compiling shaders in the background while you play.