High FPS in Editor, but fixed at 60FPS in Build

Hi,

I am measuring the FPS rate counting the Update() calls in my game. In the Editor, FPS are large, peaking at ~200FPS. However, when I build the game into an .exe, FPS are fixed at ~60FPS. What can be causing this issue?

I’ve tried to disable VSYNC, but the problem persists.

using UnityEngine;

public class Example
{
    void Start()
    {
        // Disable vSync
        QualitySettings.vSyncCount = 0;
        // Make the game run as fast as possible
        Application.targetFrameRate = 300;
    }
}