https://www.sysnet.pe.kr/2/0/12005 를 참고해 gameObject 와 transform 을 호출 할 때의 속도 차이 비교

BuildTest.cs

using System;
using System.Diagnostics;
using System.Text;
using UnityEngine;
using UnityEngine.UI;

public class BuildTest : MonoBehaviour {

    public Slider slider;
    public Text countText;
    public Button start;
    public Text result;
    
    int caseCount = 3000000;
    Transform cachedTransform;
    GameObject cachedGameObject;
    
    Action<int, string, Action<int, StringBuilder>, StringBuilder> action;

    
    void Awake()
    {
        cachedTransform = transform;
        cachedGameObject = gameObject;
        
        slider.onValueChanged.AddListener(value =>
        {
            caseCount = (int) value;
            countText.text = caseCount.ToString();
        });
        
        start.onClick.AddListener(Do);
        
        action = (loopCount, title, work, sb) =>
        {
            Stopwatch st = new Stopwatch();
            st.Start();

            work(loopCount, sb);

            st.Stop();
            sb.AppendLine(title + " : " + st.ElapsedMilliseconds + "ms.");
        };
        
        StringBuilder temp = new StringBuilder(500);
        
        action(1, "bake", WorkGameObject, temp);
        action(1, "bake", WorkCachedGameObject, temp);
        action(1, "bake", WorkTransform, temp);
        action(1, "bake", WorkCachedTransform, temp);
    }

    void Do()
    {
        StringBuilder sb = new StringBuilder(500);
        
        action(caseCount, "GameObject", WorkGameObject, sb);
        action(caseCount, "Cached GameObject", WorkCachedGameObject, sb);
        action(caseCount, "Transform", WorkTransform, sb);
        action(caseCount, "Cached Transform", WorkCachedTransform, sb);

        result.text = sb.ToString();
    }

    void WorkGameObject(int count, StringBuilder logger)
    {
        GameObject go;
        for (int i = 0; i < count; i++) {
            go = gameObject;
        }
    }

    void WorkCachedGameObject(int count, StringBuilder logger)
    {
        GameObject go;
        for (int i = 0; i < count; i++) {
            go = cachedGameObject;
        }
    }

    void WorkTransform(int count, StringBuilder logger)
    {
        Transform trm;
        for (int i = 0; i < count; i++) {
            trm = transform;
        }
    }
    
    void WorkCachedTransform(int count, StringBuilder logger)
    {
        Transform trm;
        for (int i = 0; i < count; i++) {
            trm = cachedTransform;
        }
    }
}