A couple hundred megabytes is the navigation graph, however that's going to drop dramatically in the coming months when I find some time to do some graph reduction on it. Part of it is also because JavaFX isn't a lightweight GUI framework. The rest of it probably falls into the domain of script allocations and perhaps an increase in memory allocations caused by the game itself because of certain things we're doing that may be resulting in them storing far more data in projection caches than they normally would be (however this is something that will be changed in the coming week).
