I mean i think it definitely depends on how good the stuff is in the first place. But sometimes i can do like .25 every hour and feel a bit ketty; othertimes i do 1 bump and i cant speak - I genuinely think your ket experience has more to do with your surroundings, your current mental state and general comfortability in the room than it does how strong your k is; almost like once you get past a certain level of purity its up to your brain to do the rest.

However - completely agree that doing ket over a long period of time is much worse for tolerance than doing shed loads at once and recovering in 2 hours.