This review may contain spoilers. I can handle the truth.
Don't adjust your picture.... Compared to most films, this one has unpredictable structure, pacing, and timing. This is a quick first-time viewers guide, to mention that the movie opens with a music overture and completely black screen (intentionally).
For those watching this 2012 Blu-ray edition wondering when they can take a break, the intermission begins at 2 hours and 19 minutes (music and black screen again).
Part 2 begins at 2 hours 23 minutes, 39 seconds.
THE END and credits begins at 3:43:35.