GameObject moving different in a build than normally

I'm creating a game called Stick Into It and I just did a build.

The problem happens at levels with buttons, let me explain:

On a build, when you press the button a GameObject moves down but the GameObject moves slower in a build than normally

this is the MoveBoxY script that gets controlled by the Button script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class MoveBoxY : MonoBehaviour
 {
     private Vector3 posStart;
     public float posY;
     void Start()
     {
         posStart = transform.position;
     }
     void Update()
     {
         transform.position = posStart + new Vector3(0, posY, 0);
     }
 }

This is the Button script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Button : MonoBehaviour
 {
     public GameObject parent;
     public delegate void Event();
     public bool useMoveBoxYScript;
     [Tooltip("The 'MoveBoxY' script on a GameObject that will be enabled")]
     public MoveBoxY moveBoxYScript;
     public bool useRotateBoxZScript;
     [Tooltip("The 'RotateBoxZ' script on a GameObject that will be enabled")]
     public RotateBoxZ rotateBoxZScript;
     private bool pressed;
     void OnTriggerEnter2D(Collider2D collidedObj)
     {
         if (collidedObj.CompareTag("Stick"))
         {
             parent.GetComponent<Animator>().enabled = true;
             if (!pressed)
             {
                 parent.GetComponent<AudioSource>().Play();
                 pressed = true;
             }
             if (useMoveBoxYScript)
             {
                 moveBoxYScript.enabled = true;
             }
             if (useRotateBoxZScript)
             {
                 rotateBoxZScript.enabled = true;
             }
         }
     }
     // This is the moving part
     void Update()
     {
         if (useMoveBoxYScript && moveBoxYScript.enabled && moveBoxYScript.posY >= -6.5)
         {
             moveBoxYScript.posY = moveBoxYScript.posY - 0.01f;
         }
         if (useRotateBoxZScript && rotateBoxZScript.enabled && rotateBoxZScript.rotZ < 180)
         {
             rotateBoxZScript.rotZ = rotateBoxZScript.rotZ + 0.5f;
         }
     }
 }

Can someone please help me? I'm using Unity 2020.3.3f1 and the problem only happens in a build.