CPU stay at 1190 MHz at Nexus 5?

[ckgbr]

I kind get a way to play tekken 6 without a drastic perfomance down.
I use setcpu to set 1190 as min and max with performance governor when turn on PPSSPP (setcpu profiles).
I set PPSSPP with 3 auto frameskip.
It doesn´t get a full speed but it gets about 70%to 80% and 10 to 15 fps (depending stage and charaters).
This is the best way that I found to play tekken 6 without the huge perfomance down, from almost 100% to 65%.