um, i'm not exactly an expert or anything as the bore well knows but...why would you ever have a closed events demo sessions held on the same server you use for the general public? especially if the demo is a "walled off" section of your game in the first place?
actually, that raises so many questions in general, when nowdays so many popular games (pubg, dota, overwatch, team fortress 2, siege, PRIMAL CARNAGE, even CoD, etc.) easily have a public test server fork you can participate in which is separate from a private invite test server many games also or alternatively offer by invite and all of that is completely separate from the internal test server which is separate from the work server
they wouldn't compile a server to run literally just for those 20 some users and sit in the corner? i mean when SEGA did their big demonstration for online play back in 2000 they setup a glorified WAN rather than have the Dreamcasts all dial up and connect to the actual backbone because that's a fucking stupid idea (even though it's still kinda mindblowing to me how well many of those games worked on 56k, especially compared to how poorly the rest of the gen handled broadband)
even if they were streaming it...they can't need the actual public server can they? maybe i should read the schedule again, this might not be on the plan for six more months ("setup a second server, time, three weeks, 15 people")
It's still a bit unstable, missing atmospheric effects
that's what you get for taking that six month chunk of dev time for GAS CLOUD out of the schedule CIG, IMMERSION DESTROYED