Default half speed on mhl

Hi

I have a dlock mhl adapter and its working fine for my lg optimus 3d max but when i use it with my z1 it is exactly 50% slower as normal. When i.e. i play on ppsspp every game run @ 50%. I tryed setting the gov. To performance .. no change at all. Exactly 50%. Also the xperia launcher seem significantly slower. Is there a way to disable the phone functions so it is only using the performance for the tv and not the phpne display. I read somewhere somebody had a similar issue but he either has full speed but no sound or full sound and half speed. In my case i would not be bothered by no sound and full speed because ppsspp does not emulate the sound good. actually if i pull the plug on mhl while gaming the speed turns imstantly to 100%.. a and please dont try the screen off app from the market .. this screws up everthing. So if someone has an idea on this issue i would be greatful. Ah i am using the latest ihackers rom- (nice one btw)

Thanx
Tommy