I've just played this and have the same issue. To add some further information, I was able to download the victory demos when I first entered the room (before I'd even solved it) and I still got 100% when I finished the hold.
I wonder if this room used to be high-scorable but isn't any more?
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Without struggle, there is no progress, so get up, get out, and go make the rest of your life the best of your life; you deserve to live the life that YOU want to live...
Progress - Gavin G