A simple test shows this isn't more realistic. Gravity during the jumps are off, and people walking upstairs is odd. It looks like it was filmed in realtime.
75% looks most similar to the previous Atlas videos. Also the movement of the people upstairs behind the glass or the reflections of the cameraman confirm that it has been sped up.
I don't know how fast you walk, but at 75% those people are definitely in slow-motion. I could see maybe 90%, but 100% looks completely natural to me as far as their movements are concerned. (Personally, I want to see a jump at 90% to judge, not someone walking.)