Sharing a variable from command line with clients [C#][Unity]

Hello, so I've made an FPS and for a study, I need to change the frame rate of the clients. I currently execute the game from the command line and pass an argument -fps to set the frame rate I want. The thing is I also pass the port on which the server will listen (It's actually a host/client scenario). I need to set de Application.targetFrameRate on the clients that connect to that server, so is there a way for them to access that variable? I'm using a custom NetworkManager that derives from the Unity NetworkManager so I can't use [SyncVar] or RPC calls that derive from NetworkBehaviour, right? I currently execute this like blabla.exe -server -port 7778 -fps 30

 public class NetworkManager_Custom : NetworkManager {
     [SerializeField]
     GameObject menuPanel;

 string[] args = System.Environment.GetCommandLineArgs();
 string _port = "";
 string _IPAddress = "";

 string _fps = "";

 public int fps;

 // Use this for initialization
 void Start()
 {
     if (args != null)
     {
         for (int i = 0; i < args.Length; i++)
         {
             if (args[i] == "-port")
             {
                 _port = args[i + 1].ToString();
                 //System.Console.WriteLine("lePuerto es " + _port);
                 Debug.Log("lePuerto es " + _port);
             }
             if (args[i] == "-ip")
             {
                 _IPAddress = args[i + 1].ToString();
                 //System.Console.WriteLine("leIP es " + _IPAddress);
                 Debug.Log("leip es " + _IPAddress);
             }
             if (args[i] == "-fps")
             {
                 _fps = args[i + 1].ToString();
                 //System.Console.WriteLine("leIP es " + _IPAddress);
                 Debug.Log("fps es " + _fps);
             }

             //Application.targetFrameRate = 60;
         }
         //System.Array.IndexOf(args, "-server") >=0
         if (args.Contains("-server"))
         {
             HostGame();
             //Debug.Log("fps es " + _fps);

             //NetworkManager.singleton.networkPort = int.Parse(port);
             //NetworkManager.singleton.serverBindAddress = IPAddress;
             //NetworkManager.singleton.serverBindToIP = true;
             //NetworkManager.singleton.StartServer();
         }