I think I am running into the same issue. It is probably something that I am doing since I am brand new to Godot but I am not seeing anything in the many tutorials that helps so if you figure it out please pass on the knowledge.
I am doing third person over the shoulder where I have just keyboard inputs that rotate the camera around the player. Most examples have it where the camera is much more fluid and usually mouse controlled which is just a different feel for what I am going for.
Godot Version 3.4.2