Also I believe it starts saying "your scans are not efficient" at 50%, that's what I remember from the old % based days. And yes it's a real video it's my video. I don't think the algorithm has changed just how it's displayed, and grey area is 3-5% based on my experience with it (higher the scan the bit lower you can get on it).
_________________Ex cinere surget iterum ego galaxiae dominatur.