Hi !
I just get installed the Android version of RetroArch v1.8.2 + both DeSmuME core engine.
Performances are quite bad even that’s much better with 2015 version. On Mario Kart he sound is cutted and FPS quite low.
I’ve tried EmuBox which working fine out of the box. So I conclude my device is good enough.
However I looked into options as suggested by Why is Desmume so slow?
… and I figured out that there is only interpretor available for CPU mode
How to get JIT available?