Xbox 360 controller Freezes dolphin 1 sec when X + Y or A + B is pressed

[Kroktar]

Hello people im currently using the xbox 360 for my 2nd player but i have encountered an issue, im not sure.

When im playing and i press at the same time X and Y or A and B dolphin freezes for a second and the xbox 360 vibrates(rumble) and i dont know how to solve this.

I dont have rumble on in the controller settings...i even removed all controllers but when i hit X+Y or A+B dolphin freezes for a second then return like nothing.

And this is something that only happens with dolphin.

Thanks and sorry for my bad/average english.