PPSSPP slowsdown when I use Bluetooth controller?

[drickmel]

I'm trying to play MHFU on my Samsung Galaxy S5. I can run the game with max settings at fullspeed

But when I connect a bluetooth controller(Ipega)

Game becomes choppy. Is there a fix for this?

[rofikcoga]

i feel ,, bluetooth controller affect your ppsspp ,, bluetooth low speed transfer ................ ppsspp lag in sychronize with controoller