Nintendo Switch emulator System requirements
It's hard to say the exact system requirements, it heavily depends on which game you're playing. If you experience too much lag, then changing to a lower resolution may drastically improve your fps. These are the rough estimate system requirements for a Nintendo Switch game:
(for 2D games)
Intel Core i3-6100 / AMD Ryzen 5 2500X
Intel HD Graphics 530 / Nvidia GeForce GT 710 or better
(for 3D games)
Intel Core i7-8700k
Nvidia GTX 1070 Ti
Currently on Windows, an Intel or Nvidia GPU is recommended due to AMD GPU driver issues.
GPUs must support OpenGL 4.5 (or higher) & OpenGL Compatibility profile.
To find out if your GPU meets these requirements, visit https://opengl.gpuinfo.org and check your GPU details.