Pixel perfect jitter

Hello everyone!!

Video: IMG_4044.mov - Google Drive

I have a problem in my game where the background jitters a lot. I am not moving the background but the player, that has a Cinemachine, with a Pixel Perfect Extension, following him. I have also a Pixel Perfect Camera attached to the Main Camera GameObject. The problem gets way worst when I make a build and that’s why I recorded with my phone.

Any help would be appreciated as I’m loosing my mind with this - I tried everything I saw from past posts but nothing seems to work.

The part of the script that makes the player moves (only the character from above moves, the other just follows him with a simple transform.position = …):

   private void FixedUpdate()
    {
        Vector3 targetVelocity = new Vector2(runSpeed * Time.deltaTime * 10f, rb.velocity.y);
        rb.velocity = Vector3.SmoothDamp(rb.velocity, targetVelocity, ref velocity, movementSmoothing);
    }

The components of the Main Camera:

The rigidbody of the character from above:

The virtual cam gameobject:

remove the cinemachine