OnPhotonSerializeView sync is so lag

event in the same network, i try in Pc and my mobile. is it something wrong with my code? i follow the instruction using OnPhotonSerializeView and using stream. and also trying in new project works fine. i dont know what is wrong with my code..

 private PhotonView pv;
     private CharacterController myCC;
     public float walkSpeed = 2;
     public float runSpeed = 4;
     public float rotationSpeed;
 
     float speed;
 
     public FixedJoystick leftjoystick;
     public FixedButton button;
 
     //Player Component for Stream
     private Rigidbody rb;
     private Transform tf;
 
     Quaternion targetRotation;
     // Start is called before the first frame update
     void Start()
     {
         pv = GetComponent<PhotonView>();
         myCC = GetComponent<CharacterController>();
         leftjoystick = (FixedJoystick)FindObjectOfType(typeof(FixedJoystick));
         button = (FixedButton)FindObjectOfType(typeof(FixedButton));
         rb = transform.Find("Player").GetComponent<Rigidbody>();
         tf = transform.Find("Player").GetComponent<Transform>();
 
         Debug.Log(tf.name);
         Debug.Log(rb.name);
 
     }
 
         // Update is called once per frame
         void Update()
     {
         if (pv.IsMine)
         {
             if (button.Pressed)
             {
                 speed = runSpeed;
             }
             else
             {
                 speed = walkSpeed;
             }
             BasicMovement();
             BasicRotation();
         }
     }
 
     
     void BasicMovement()
     {
         Vector3 targetDirection = new Vector3(leftjoystick.input.x,0, leftjoystick.input.y);
         myCC.Move(targetDirection * Time.deltaTime*speed);
 
         if (Input.GetKey(KeyCode.W))
         {
             myCC.Move(transform.forward * Time.deltaTime * speed);
         }
         if (Input.GetKey(KeyCode.A))
         {
             myCC.Move(-transform.right * Time.deltaTime * speed);
         }
         if (Input.GetKey(KeyCode.S))
         {
             myCC.Move(-transform.forward * Time.deltaTime * speed);
         }
         if (Input.GetKey(KeyCode.D))
         {
             myCC.Move(transform.right * Time.deltaTime * speed);
         }
     }
 
     void BasicRotation()
     {
         //targetRotation = Quaternion.Euler(0, angle, 0);
         transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, rotationSpeed * Time.deltaTime);
 
     }
 
     public void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
     {
         if (stream.IsWriting)
         {
             // stream.SendNext();
             // stream.SendNext();
             // stream.SendNext();
             stream.SendNext(rb.velocity);
             stream.SendNext(rb.rotation);
             stream.SendNext(rb.position);
 
             stream.SendNext(tf.position);
             stream.SendNext(tf.rotation);
         }
         else
         {
             rb.velocity = (Vector3)stream.ReceiveNext();
             rb.rotation = (Quaternion)stream.ReceiveNext();
             rb.position = (Vector3)stream.ReceiveNext();
 
             tf.position = (Vector3)stream.ReceiveNext();
             tf.rotation = (Quaternion)stream.ReceiveNext();
 
         }
     }