Rigidbody2D with interpolation lags while moving by velocity, how to solve the problem?

Questions & Answers
1

I have created a new 2D project and I have a single sprite in the scene with a BoxCollider2D and a Rigidbody2D.with gravity scale set to 0.
and the Rigidbody2D’s interpolate is set to “interpolate”.
I attached the script below to this game object:

using UnityEngine;
using System.Collections;

public class TestGo : MonoBehaviour {
	void Start () {
        Rigidbody2D rb = GetComponent<Rigidbody2D>();
        rb.velocity = new Vector2(10, 0);
	}
}

the problem is that when I click play,the game object moves with a constant velocity but it vibrates and lags from time to time,I expected with setting interpolation to “interpolate” the problem would be fixed,but it still remains :frowning:
Does any body know how shoud I fix this?

FYI, I am using Unity 5.3.4p3 with a personal licence,and my target device is Android.
tnx in advance.

2

this should work without lag.

     void Start () {
         Rigidbody2D rb = GetComponent<Rigidbody2D>();
     }
     void FixedUpdate() {
          rb.velocity = new Vector2(10, 0);
     }