[Solved] Custom Editor really slow (5.6.0f3)

Unity Editor Editor Extensions
1

I am currently making a custom editor and as i add more data, the editor start to get really slow. So i made a simple example to show this problem:

using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

[CustomEditor(typeof(Example))]
public class ExampleEditor : Editor
{

    public override void OnInspectorGUI()
    {
        EditorGUILayout.LabelField("Data size: " + (target as Example).data.vector.Length);

        if (GUILayout.Button("Create data"))
        {
            (target as Example).CreateData();
        }
    }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Example : MonoBehaviour {

    public ExampleData data = new ExampleData();

    public void CreateData()
    {
        int size = 1000;

        data = new ExampleData();
        data.vector = new ExampleDataInto[size];
        for(int i = 0; i < size; i++)
        {
            data.vector[i] = new ExampleDataInto();
        }
    }
}
[System.Serializable]
public class ExampleData
{
    public ExampleDataInto[] vector = new ExampleDataInto[0];
}

[System.Serializable]
public class ExampleDataInto
{
    public Vector3[] vector = new Vector3[1000];
    public Vector3[] vector2 = new Vector3[1000];
    public Vector3[] vector3 = new Vector3[1000];
}

Just keep adding into ExampleDataInto the vars vector4, vector5, vector6, etc… each one add more slowdown to the editor;

So i changed the ExampleDataInto to extend ScriptableObject

using UnityEngine;

public class Example : MonoBehaviour {

    public ExampleData data = new ExampleData();

    public void CreateData()
    {
        int size = 1000;

        data = new ExampleData();
        data.vector = new ExampleDataInto[size];
        for(int i = 0; i < size; i++)
        {
            data.vector[i] = ScriptableObject.CreateInstance<ExampleDataInto>();
        }
    }
}
[System.Serializable]
public class ExampleData
{
    public ExampleDataInto[] vector = new ExampleDataInto[0];
}

[System.Serializable]
public class ExampleDataInto:ScriptableObject
{
    public Vector3[] vector = new Vector3[1000];
    public Vector3[] vector2 = new Vector3[1000];
    public Vector3[] vector3 = new Vector3[1000];
}

This way the editor don’t lag, but once i hit play it throw this error:

Does anyone know the corret way to set this up?

2

So, i should had read the error better, i just had to put ExampleDataInto into its own .cs file and it worked. A little of strange behaviour, but not a problem. So this is solved.