[Bug] Join time: Figure out why there's a ~10sec delay in requesting assets

[Kluskey]

There's a 10 sec delay until the GD client starts requesting assets. We can greatly improve join time by figuring out where that delay is.

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Join time improvements thoughts:

• Instantly have the player "start" via getting all data and starting the scene (thus the player can walk around, manipulate things, etc.) and then it connects to the network. There will need to be a reconciliation, but that's no biggie - the important part is that the player is quickly in-world.
• OfflineMultiplayerPeer: Have the client join be immediately but it doesn't actually open a socket right away (XL t-shirt size)

To keep in mind: What if the server didn't change per Space? The server is just "always running" and the Spaces are dynamically swapped out