Version: 2017.3
public ushort PacketSize ;

Description

Defines maximum packet size (in bytes) (including payload and all header). Packet can contain multiple messages inside. Default value = 1500.

Note that this default value is suitable for local testing only. Usually you should change this value; a recommended setting for PC or mobile is 1470. For games consoles this value should probably be less than ~1100. Wrong size definition can cause packet dropping.

using UnityEngine;
using UnityEngine.Networking;

public class ExampleScript : NetworkBehaviour { void Start() { ConnectionConfig myConfig = new ConnectionConfig(); myConfig.AddChannel(QosType.Unreliable); myConfig.AddChannel(QosType.UnreliableFragmented); myConfig.PacketSize = 1440; } }