Be warned that it's not the fly-on-the-wall perspective implied by the publicity - quite a bit is either old footage or specially staged - but the advantage of viewing via playback is that you can ff through anything that doesn't catch your interest.
If you're short of time, scroll through to 6:00, where there's a lengthy but edited selection of highlights. My other tip is ROH Fight Club at 4:40, where a fight director teaches a bunch of young singers the art of the operatic punch-up. The final hour or so, shot mostly from backstage during a recent Die Walküre, is intermittently fascinating too. Monday's frozen screens and error messages seem to have been resolved.