Slow down and Multi Core for citra

I able to play Fire emblem Fates, awakening with just a little slowdown. But fire emblem echoes it’s really slow. I hope the multi threading core will implemented

There’s no guarantee that multi-core would speed things up. The reasons for this are due to the differences in how threads work on a PC & how they work on a 3DS. While the developers are planning on supporting this, but no one is working on it yet.