I haven't really timed it, but it seems like it takes forever. I squish about 3.5g at a time, in the little filter bags, " bottle tech" (ugh with the "techs"). I take my time, usually only squishing the bag down half or 3/4 with very light pressure, smoke a dab, then add a little more. I try to not hammer on it till I see some oils begin to move to the outside of the bag, and then I do little increments of extra pressure. Sometimes I walk away and get a drink or something, all in all, I'd say 5 - 7 mins... but I'm bad at estimating times, so maybe I will squish some out later and time it.
I love the rosin because I can just blast off and carry on with whatever I'm doing, minus the whole ritual I've developed where I : select a strain, pick a nug, admire it, take a picture, grind it, smell it, pack it etc... but I do believe my tolerance is elevated now. I love giving friends a dab and watching their reactions.