Unity 3D : Issue with addForce and Hinge Joint

Moving a Hinge Joint with add force, causes the object that is attached to lag behind. If i move the parent by hand there is no problem.

https://youtu.be/UssdpI648a0

Any idea how to solve this? Below is the script i use to addForce

 using UnityEngine;
 using System.Collections;
 
 public class ExampleClass : MonoBehaviour 
 {
     public float thrust;
     public Rigidbody rb;
     public GameObject pushPoint;
 
     void Start() 
     {
         rb = GetComponent<Rigidbody>();
     }
 
     void FixedUpdate() 
     {
         rb.AddForceAtPosition(transform.right * thrust, pushPoint.transform.position);
     }
 }