The Final Burn Emulator for the Nintendo Switch gets an update:

pFBA 1.54:

switch: fix audio
switch: add 4 player support. When joycons are not docked (multiplayer), use "L STICK" button press for start or coin instead (+) or (-)). All players share the same button configuration for now.
switch: fix a random crash on exit (hopefully)
switch: lower font size
switch: use linear filtering as default option (faster)
pfba: fix button textures not deleted when changing menu
pfba: fix version not correctly handled on some platforms
pfba: fix missing rom path slash on new config

download https://github.com/Cpasjuste/pfba/tree/new

via http://www.nintendomax.com/viewtopic.php?f=168&t=16511