Same room, same plant, same nutes, same PPM, same PH, same amount of water, same media, same amount of media. Yeh my VPD and CO2 differs and my temp a little but everything else is the same I have been using for 8 years.
So I will stand by my 4-5 days quicker. If you dont agree that is fine. I am not going to get in a pissing match with someone who wants to.
I regularly see 4-5 day variations in a rock solid room with zero changes from run to run. But sure, you're smarter than the scientific method. You do you.