Alternatives to vJoy and joy-con drivers are BetterJoyForCemu and x360ce(all its derivations: official or unofficial).
For Cemu Emulator Grab this one:
Tip: You can mirror trough Mira-cast(5GHz connection recommended) or you can buy a VGA to HDMI adapter to connect to a TV the computer and enjoy with a expanded screen if your computer screen is not the size you prefer whatever it is a laptop or home desktop computer...
vJoySetup.exe and joycon-driver.exe needed for this controllers mappings(mainly the joy-cons combined as one controller)to Xbox 360 layout mapper for use in Padstarr on PC for PC Games and even Retroarch, Citra, and even Dolphin emulator for GC games or also WII games or any other emulator or PC...