It has its issues, it has its bugs, and it’s certainly not even remotely functional for more intensive titles. What makes this official Citra for Android so impressive is not that it’s a perfectly functioning emulator without any issues that nobody has discovered. It’s may be possible to emulate 3DS games flawlessly in the future with more optimization.
We are not testing for raw performance at the moment as it wouldn’t be fair to any of the developers involved in the project, as it may give off a false assumption that Nintendo 3DS games are unplayable on current-gen Android smartphones (see also iOS version). Facebook Nintendo 3DS emulator MMJ for Android INFO: