Kevoot has released a new version of the Nes Emulator for the Nintendo Switch:

New Release: 1.4

This one fixes most crashing issues seen before. The issues seem to stem from a deadlock somewhere on the multithreading end of things. I don't really have time to track it down, so have reverted the threading and fixed up a few things.

Configurable controllers are now supported as well, so have fun!