Standard assets controller, camera judder.

I'm using Unity 2021.1.5f.
I recently tried out the new standard assets 3rd person controller, in a new unity project. I downloaded it from my assets through the package manager.

I noticed there's a lot of judder to the camera's movement. When I start the scene and just simply move the mouse to pan the camera around it feels camera the camera angle only updates once every few frames. It's like it tried to catch up the mouse in steps.

Has anyone else had this problem? Is it a bug in the package?

 

Nevermind, I figured it out. But in case anyone else finds this:

I had 2 instances of unity open. Once I closed the 1st one, the one with the standard assets camera worked ok.