I used to do that too, Grim, but it stopped working for me about 2013 or so.
While they didn't mind too much people using that for a training method, they were concerned that it was too easy, and made a couple change back then to up the risk-vs.-reward of it.
Of course, part of the difficulty for me is that between my physical abilities and system/connection issues, I've never been able to complete the experimental room, so it's possible I'm the one with delays built in that makes things more difficult.