I am sorry I can not really tell how long it took since I had it running in the background and came back to it here an then. There where certainly several rounds without progress which where a bit frustrating. I get that the goal might be to find the correct combination of prestige point distribution to proceed but I wish there where at least an "abandon run" button so that you do not always have to wait through the whole 10 minutes if you realize that this round is not going to work.