Dynamic FPS Counter

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

public class ClientSettings : MonoBehaviour
{
    public enum TargetFrameRate { Limit_30 = 30, Limit_60 = 60, Limit_120 = 120,Limit_144 = 144, Limit_240 = 240, Unlimited = 1337}
    public TargetFrameRate frameRate = TargetFrameRate.Unlimited;

    public enum VSyncLevels { disabled, MonitorRefreshRate, HalfMonitorRefreshRate }
    public VSyncLevels vSync = VSyncLevels.MonitorRefreshRate;

    public bool ShowFPS = false;

    private string fpsLabel;
    private float count;
    private int hideOffset = 0;
    private Color fpsColor = Color.green;

    IEnumerator Start()
    {
        QualitySettings.vSyncCount = (int)vSync;
        Application.targetFrameRate = (int)frameRate;

        float maxFPS = 0f;
        float minFPS = 1337f;

        GUI.depth = 2;

        QualitySettings.vSyncCount = (int)vSync;
        Application.targetFrameRate = (int)frameRate;

        while (true)
        {
            if (Time.timeScale == 1 && ShowFPS)
            {
                hideOffset = 0;
                yield return new WaitForSeconds(0.1f);
                count = (1 / Time.deltaTime);

                if (count > maxFPS) maxFPS = count;
                if (count < minFPS) minFPS = count;

                string target = "(" + frameRate.ToString() + ")";
                if (frameRate == TargetFrameRate.Unlimited) target = "";
                fpsLabel = "" + Mathf.Round(count) + target + "\nmin:" + Mathf.Round(minFPS) +"\nmax:"+ Mathf.Round(maxFPS);

                //Color Changing in relation to fps count
                if (Mathf.Round(count) < 30) fpsColor = Color.red;
                if (Mathf.Round(count) < 59 && Mathf.Round(count) >= 30) fpsColor = Color.yellow;
                if(Mathf.Round(count) >= 60) fpsColor = Color.green;
            }
            else
            {
                //Reset and hide box outside the screen
                fpsLabel = "";
                maxFPS = 0f;
                minFPS = 1337f;
                hideOffset = -500;
            }
            yield return new WaitForSeconds(0.5f);
        }
    }

    void OnGUI()
    {
        GUI.color = fpsColor;
        GUI.Box(new Rect(hideOffset + 1, 1, 125, 50), fpsLabel);
    }
}