Transforming in-sub MemPos/MemLocalPos coordinates to outside coordinates if the character is outside and vice versa, server doesn't start sending ingame updates until they receive the first ingame update message from the client (no need to send updates while the client is loading or if they fail to start the round)

Subsurface/Source/Networking/GameServer.cs

@@ -76,6 +76,8 @@ namespace Barotrauma.Networking
             config.SimulatedRandomLatency = 0.05f;
             config.SimulatedDuplicatesChance = 0.05f;
             config.SimulatedMinimumLatency = 0.1f;
+
+            config.ConnectionTimeout = 600.0f;
 #endif 
             config.Port = port;
             Port = port;
@@ -472,16 +474,9 @@ namespace Barotrauma.Networking
 
                     foreach (Client c in ConnectedClients)
                     {
-                        if (gameStarted)
+                        if (gameStarted && c.inGame)
                         {
-                            if (c.inGame)
-                            {
-                                ClientWriteIngame(c);
-                            }
-                            else
-                            {
-                                ClientWriteLobby(c);
-                            }
+                            ClientWriteIngame(c);                         
                         }
                         else
                         {
@@ -606,7 +601,6 @@ namespace Barotrauma.Networking
                         //break;
                 }
             }
-
         }
 
         private void ClientReadIngame(NetIncomingMessage inc)
@@ -617,6 +611,8 @@ namespace Barotrauma.Networking
                 inc.SenderConnection.Disconnect("You're not a connected client.");
                 return;
             }
+
+            if (gameStarted) c.inGame = true;
             
             ClientNetObject objHeader;
             while ((objHeader = (ClientNetObject)inc.ReadByte()) != ClientNetObject.END_OF_MESSAGE)
@@ -924,7 +920,6 @@ namespace Barotrauma.Networking
             List<CharacterInfo> characterInfos = new List<CharacterInfo>();
             foreach (Client client in connectedClients)
             {
-                client.inGame = true;
                 if (client.characterInfo == null)
                 {
                     client.characterInfo = new CharacterInfo(Character.HumanConfigFile, client.name);