This is the step where most users fail.

If you find that your 3DS games are lagging on Lemuroid, here are a few things to check: Resolution: 1x Native Resolution

Depending on your GPU, switching the video driver might improve stability. Important Note:

Users seeking to play 3DS games on Android must use a dedicated 3DS emulator such as Citra (PabloMK7 fork) or Lime3DS. For classic handhelds like Game Boy Advance, Nintendo DS, or PSP, Lemuroid remains an excellent choice, but the 3DS lies outside its capabilities.