Gamepads analogs have some kind of dead zone

[vsub_]

I set the dead zone to 0 but there is no difference at all
My gamepad can work in wired and wireless mode but ppsspp only detect it as XInput(pcsx2 and rpcs3 for example can use it DInput and in XInput mode...the gamepad don't have a feature to switch between modes)

I remember I was using my old DInput only wired gamepad before to play PSP2 and I was controling the camera with the right analog without problems(that gamepad is not here to try again)

The analogs are working perfectly fine when I set for example the left analog to work as the d-pad on:
PCSX2 in DInput/Xinput
RPCS3 in DInput/Xinput
ePSXe....I don't know what is he using

The d-pad direction is detected immediately by even the smallest push