Hello! First of all, congratulations for this good emulator.
I'm from Brazil and bought your emulator since it's release, years ago, and have been seen a great improvement since then. BUT I have to say: my Samsung Galaxy Note 3 (stock 4.4.2) with Snapdragon 800 hasn't been having a good performance with your emulator. I've been using many combination of settings, both with 4x Resolution HD and OpenGL, and the performance isn't good enough (especially in 4x HD, which is strange, I expected it to be faster than OpenGL).
In FF VIII, when I call some Guardian Force (GF), like Ifrit or Sheva, for example, and they use their ability, the fps drops and the sound slows even more. The rest of the game seems to run normally. Looks like a sound-related problem, but I don't know. I've seen people complaining about the Note 3's performance with your emulator, telling that their cellphones had worse performance than other weaker ones, so I don't understand the reason of this problem.
Anyway, I hope that this problem can be resolved. I'm looking forward to it, since other emulators don't have these sound or performance issues. Nevertheless, your emulator is becoming better and better!