Is it really that complicated though syncing stuff up to computers these days? You just need some hardcore processing power to ensure that its all done as smoothly as possible, its all going along pretty much the same time and effect timings aren't exactly new technology...
The first VR section, being live action will be less demanding on the system as well, which is probably why the CGI section is horrid (see also Nintendo doing Star Fox Zero at low res so it could generate two simultaneous views at once at 60fps)...
Just because a system is demanding on processing power doesn't mean its complex, especially when there's only a set amount of potential things being streamed... If it were 58 completely different videos, then THAT would be complex...