Cinemachine and UFPS

I'm not familiar with UFPS, but often these controllers are trying to control the main camera directly, which is in conflict with Cinemachine because Cinemachine is also trying to do that.

The way to fix it is to open up the controller, and replace the Camera behaviour with a CinemachineVirtualCamera behaviour with Do Nothing in Aim and Body. You can either delete the embedded Camera behaviour, or just disable it. You may have to edit some controller code as a result of this change. If the controller is tagged as the MainCamera, untag it. This converts your camera controller to a virtual camera controller. The virtual camera's transform is controlled by the controller behaviour.

Then, create a new top-level Camera, tag it MainCamera, and add a CinemachineBrain component to it.

If you don't have any other virtual cameras in your scene, main camera with the brain will now automatically track the UFPS controller exactly, as if the main camera had the UFPS behaviour on it.

Now that UFPS is a vcam instead of a camera, you can use it as you would any other vcam, it will play nicely with all the other vcams in your scene, including blending, noise, impulse, and timeline.

 

Sorry, I don't have a tutorial. Like I said, I don't have specific experience with UFPS, so maybe nothing I said is even correct for this case, or maybe you'll have to massage the UFPS scripts a little to get it to work.