Camera have weird jittering

Unity Engine
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1

Hello.

I’m using Cinemachine and the new InputSystem to make a first person camera. I’ve completed that task, but when I’m executing the game, when I move the player and the camera at the same time, it has some nasty jittering, and I don’t know exactly why. Here’s my code:

public class PlayerMovement : MonoBehaviour
{
    [SerializeField]
    private float moveSpeed;
    
    private Vector3 movement;

    private Rigidbody rb;

    private Transform cameraOrientation;

    private void Awake()
    {        
        rb = GetComponent<Rigidbody>();
        cameraOrientation = Camera.main.transform;
    }

    private void FixedUpdate()
    {
        //I'm using another class to get the values from the input
        Vector2 move = InputManager.Instance.GetPlayerMovement();        
        movement = new Vector3(move.x, 0, move.y);
        movement = cameraOrientation.forward * movement.z + cameraOrientation.right * movement.x;
        movement.y = 0f;
        rb.velocity = movement * moveSpeed;
    }
}

Thanks in advanced

2

If you use rigidbody, you should enable interpolation on it. If it still kinda jittery you should enable slight damping on cinemachine virtual camera to smooth it out.

3

It’s never a good idea to use damping for this purpose. It’s always best to figure out the source of the jittering and fix it properly. 90% of the time it has something to do with aliasing between FixedUpdate and Update, or you are moving the Rigidbody in such a way as to break interpolation.

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