Gameobject stutters a lot when moving after me

It stutters a lot up and down and doesnt move smoothly

code: using System.Collections; using System.Collections.Generic; using UnityEngine;

public class Enemy : MonoBehaviour { // Start is called before the first frame update

 GameObject target;

 public float rotx = 0;
 public float roty = 0;
 public float rotz = 0;

 public float speed = 3;

 void Start()
 {
     target = GameObject.FindWithTag("Player").gameObject;
 }

 // Update is called once per frame
 void Update()
 {
     transform.LookAt(target.transform);
     transform.Translate(Vector3.forward * 3 * Time.deltaTime);
     transform.Rotate(rotx, roty, rotz);
 }

 void OnCollisionEnter(Collision other)
 {
     if (other.gameObject.tag == "Player")
     {
         Destroy(gameObject);
     }
 }

 void OnTriggerEnter(Collider other)
 { }

}