pokemon platinum lags so much on Sony Xperia Z

[davide91dd]

Hi, i just installed drastic 2.2.1.2a and I'm trying to play pokemon platinum on Sony Xperia Z, but the game lags so much, the fps indicator shows 70% 60%. I saw some video on youtube playing it on my same device and it run smoothly. My settings are:
Frameskips=auto Value=4
Filter=none
Multi-threaded 3d=off
I also tried 16bit-rendering and low resolution textures but nothing changes.
Please help