GEAR VR UI when playing without distortion ?

Hey everyone, I have a problem in my VR project. I have a game where we can interact with 3D objects. for example when i click with my RayCast i have to show a menu (2D UI) and can choose a task. My problem is when i try it on my screen using mouse Input to rotate the camera i get a nice menu , but once i try it in my gear vr i get a distortion of the menu so the user will be uncomfortable with it. I tried to use 2 cameras: one for my scene and the other for the menu UI but i got distortion too and not nice menu. Any solutions please ?! Thank you. Ali