Yeah, I always groop objects as much as possible. And of course I leave only one or two layers open. But still the larger the scene gets, the more instable Vue gets. Sometimes errors occur during saving, then the files that used to be 230 Mb get 191 Kb. Fortunately I make backup copies of the scenes every hour I work in Vue. But still, I have 1024 MB of memory, that should be enough doesn't it?