Score UI update causes frames to skip IOS only

Hello,

So I'm using this techique to update my score. I never had any troubles with it, but this occured in a previous project of mine. I fixed it there by replacing the new UI with a GUIText, which did the trick, but for this project I can't use a GUIText.

So basicly what happends is when the player gets a score point and I update the UI, the game skips or laggs for a few frames. It doesn't load, it skips. Which is VERY annoying for the player!

Code is very basic:

 void OnTriggerEnter2D(Collider2D col)
 {
     if (col.transform.tag == "Point")
     {
         JumpCarGameController.Instance.AddScore();
     }
 }

inside JumpCarGameController is following method:

 public void AddScore()
 {
     score++;
     GlobalGameGUI.Instance.UpdateScoreText(score);
 }

And in GlobalGameGUI:

 public void UpdateScoreText(int score)
 {
     inGamescoreText.text = score.ToString();
 }

"inGamescoreText" is a text object of the new UI (since 4.6) unity, I linked it in the inspector like this:

Only happends on IOS, not in editor or android, also tested with multiple projects started froms scratch. Reinstalled unity twice but here I still am.