The lower the temp I think it tastes better for longer. But yes it is less potent. I start mine at about 7 or 8 if its just me and I will vape like 2-3 bags. If there is a lot of people and I want to make it last put it on a lower setting. Don't vape after it starts to taste bad. You will find this point with experimenting.. Save all the extra brown shake, you can make brownies out of these. The way I do it is kind of basic: I just throw the shake in the brownie mix, no butter or oil or anything like that. They make for great brownies though.