When a client connects to a scene, send other avatar appearance data asynchronously to reduce hold up in the IN UDP packet processing loop.

This is already being done for the initial object data send.

OpenSim/Region/Framework/Scenes/ScenePresence.cs

@@ -2494,6 +2494,9 @@ namespace OpenSim.Region.Framework.Scenes
         }
 
         public void SendInitialDataToMe()
+        {
+            // Send all scene object to the new client
+            Util.FireAndForget(delegate
             {
                 // we created a new ScenePresence (a new child agent) in a fresh region.
                 // Request info about all the (root) agents in this region
@@ -2501,9 +2504,6 @@ namespace OpenSim.Region.Framework.Scenes
                 SendOtherAgentsAvatarDataToMe();
                 SendOtherAgentsAppearanceToMe();
 
-            // Send all scene object to the new client
-            Util.FireAndForget(delegate
-            {
                 EntityBase[] entities = Scene.Entities.GetEntities();
                 foreach(EntityBase e in entities)
                 {