Hmm, interesting.. it definitely looks better afterwards. Possibly the temps were higher with full brightness and thats what was stressing her, maybe thirsty? this stage of growth sucks up alot more water than early growth.
I always recommend this app you can download on your phone called Photone - theres a in app purchase for an amazingly accurate light meter that will give you a PPFD read out. I did my reasearch on it and its within 10% of the apogee high end light sensors. Its a great tool I use often for setting light brightness and height. That will show you if you have too much light at full brightness. You want something around at least 500 PPFD, but ideally more around 1000 for flowering.