>but about aio can i still use my fp controller logic on the fsm and just use the cameraOnce you install the AIO asset, you won't need to. Think of it is a pre-built controller "Driver" for your character. Everything is setup in the devs script, but in the screenshot i've attached below you only need to worry about adjusting the parameters to your liking. Just drag that blue box into your scene...
Image1: A project I'm currently working on, it has the capsule (Headjoint) and PlayerCamera integrated when you drag that blue box into your scene. That green ball is my MB (MotionBlur) setup I did afterwards, its not included.
Image2: You can adjust the mouse look sensitivity, it even comes with that auto-lock mouse hide cursor I mentioned, stamina bar, jumping parameters...its all there.
Image 3 & 4: Just showing my Post Processing Layer to configure motion blur.
If you want to know how to incorporate that into your AIO camera, this did the trick:
From there, you can even fiddle with more post-processing effects.
I'm more than confident this will sort out your problems with camera, mouse going over the screen, player controller etc...
If not, well then you're shit outta luck