[SerializeField] int fpsLimit = 60;

    [ContextMenuItem("Apply Target Framerate", "ApplyTargetFrameRate")]
    [SerializeField] private int targetFrameRate;

        Application.targetFrameRate = fpsLimit;   

         ApplyTargetFrameRate();
    }
    void ApplyTargetFrameRate() {
        Application.targetFrameRate = targetFrameRate;  

  _targetFrameRate: 60