Hmm I wonder why the mouse sensitivity is like that? This is my camera method "Look"https://imgur.com/a/ubptRxO and I would think that the sensitivity would be consistent? Maybe overly sensitive, but not inconsistent. But I know that for me it was "okay", maybe on the edge of to fast. BUT I do have a mouse where I can change my sensitivity, so I have made it a little lower. SO I guess its faster for other people and I cant see that because of my mouse sensitivity?
The rapid spinning wasn't consistent, which is strange, sometimes it was slower moving then it would move really fast. It could be in the Look function. In your Look function, you are rotating the X on transform.rotation, but rating the Y on camera.transform.localRotation.
Shouldn't you be rotating the camera on both X and Y in the same way? I'm assuming this code is on your player, so you are rotating the player on X but the camera on Y?
"so you are rotating the player on X but the camera on Y?" Well, yeah. So I rotate the y on the player with x input from the mouse, which rotates the player, with camera and anything else under the player. Then when its time to rotate up and down, you only want the camera to rotate. Not the player, just the camera. Thats why the y input rotates the camera. If you have any suggestions on a better way that would be great(I am pretty sure you could get a better working camera with Cinemachine)
