PUN - Unity 2D Synchroniztion

Hello. I am working on a multiplayer 2D game in unity and I am using PUN(v1.0). I am not using transform view or rigidbody view nor anyother views. I am only using Photon view in my Player and made the photon view observe the following script which is given below to sync the players.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class NetworkCharcater : Photon.MonoBehaviour {
 
     public Rigidbody2D rb;
     private Vector2 remoteVelocity;
     private Vector3 realPosition=Vector3.zero;
     private Quaternion realRotation=Quaternion.identity;
 
     // Use this for initialization
     void Start () {
     }
 
     // Update is called once per frame
     void Update () {
         if (!photonView.isMine) {
             transform.position = Vector3.Lerp (transform.position, realPosition, 0.1f);
             transform.rotation = Quaternion.Lerp (transform.rotation, realRotation, 0.1f);
             rb.velocity += remoteVelocity;    
         }
     }
 
     public void OnPhotonSerializeView(PhotonStream stream,PhotonMessageInfo info){
         if (stream.isWriting) {
             stream.SendNext (transform.position);
             stream.SendNext(transform.rotation);
             stream.SendNext (rb.velocity);
         } else {
             realPosition = (Vector3)stream.ReceiveNext ();
             realRotation = (Quaternion)stream.ReceiveNext ();
             rb.velocity = (Vector2)stream.ReceiveNext ();
 
             float lag = Mathf.Abs ((float)(PhotonNetwork.time - info.timestamp));
             remoteVelocity = rb.velocity * lag;
         }
     }
 
 }

It works fine.But I am not satisfied with the synchronization and still has some delay in synchroniztion. It is an action fighting game, so I want to get a perfect sync. Please help!! What is the best way to sync the data perfectly(2D game)??