Simple 2D Parallax with orthographic pixel perfect cameras

I am using URP with Pixel Perfect on my orthographic Main Camera, and the latest version of CM with the Universal Pixel Perfect extension on my VCams.

My screens/Vcams are static and I blend from one to another when the player moves between screens.
During these transitions, I would like a very simple parallax effect on the background plane (I cannot do this with a perspective cam -> orthographic & pixel perfect).

A quick test as shown below leads to massive jittering of the background plane, even if I use LateUpdate instead of Update. It is a if the blend position interpolation value (Ease in/out)) is not the same as the real cinemachineBrain position value passed to the background plane.

Code (CSharp):

1.     private void Update()
2.     {
3.         if (cinemachineBrain.IsBlending)
4.             transform.position = (Vector2)cinemachineBrain.transform.position * depthCoefficient;
5.     }

Any ideas? Another way to approach this?
Thanks.

 

Works like a charm, thanks!