Quote Originally Posted by Norondor View Post
... and this in turn is based on the assumption that a random group in DF takes approximately twice as long to clear dungeons as a pre-formed group, which is most likely not the case, on average. In WP, as in your anecdote above, it totally can be that bad, 40m vs. ~20m -- but given that the duty finder bonus is larger than the bonus for actually clearing WP you'd have had to take a little more like an hour to make it an even amount of tomestones/hour.
I'll give you that if your runs with your friends are generally slow, then yes it's more efficient to run duty roulette over 5 or 6 days. Depending on how slow you are compared to the average DF group will determine just how much more efficient it is, with it being twice as efficient if it takes you as long to run in a preformed as the average DF group.

However, 4-5 random DF runs does not directly translate into 9-10 preformed runs when trying to figure out time spent to tomes gained otherwise.

Quote Originally Posted by Norondor View Post
So you'd rather have played with your friends? We're totally on the same page here!
I'm not sure we are, because you seem to feel that this bonus is so large that you're obligated to leave your friends and join a solo queue. Considering the hassle and unpredictability of the solo queue, it's barely worth it for me to join when none of my friends are available. The bonus makes it just attractive enough that if I'm bored and no ones on, I might do it over working on crafting/gathering/alt. You'll never see me joining it when I have the option to run with friends instead.