Was it longer because it was just longer, or the group just didn’t have the Sprinter experience?
What I mean is that, with a group, you’re going to have a guaranteed 90 seconds of wasted time. With all the join dialogs, probably 3 minutes. So, can you complete all the sections in the game which benefit from multiple players, within those 3 minutes? If yes, then the group is longer.
But what tends to happen is that people vastly underestimate the townie. And I say this too with the PC version. The townie should be one of the most experienced Sprinter players. More Sprinter conquest attempts are lost because of a terrible townie than time saved with that extra player. For runners, with the exception of Kharza Den, the game practically tells you where to go. For the townie though, you need to know exactly where to stand, when. That’s what many people don’t understand. They don’t have the speed gear, they’ve never run the conquest at all, so they volunteer for it, because it’s the easy part.
And that’s totally wrong. Don’t attempt the conquest if that’s who you’re recruiting, because you’re most likely going to fail terribly, unless you have a supremely knowledgeable runner. In their eyes, it’s only a 2 second run to Haedrig. But it becomes a 2 second run here, a 5 second run there, and that all adds up. From having run this conquest a ton, I’ve concluded that an inexperienced townie will add nearly 10 minutes to a run, and it’s all because those seconds add up. 10 minutes is a ridiculous amount of time when you consider you need to beat the whole campaign in an hour. Yes, most times when I’ve carried people, and they said they’re going to be a townie, I end up doing their job too. I should not be able to teleport from a location (~8 seconds), and talk to the guy before the player who’s in town right next to the person can talk to them, but that’s what happens more often than not. That’s why on the PC, I’ll (almost) never go with a townie anymore. (Almost, because if they’ve completed the conquest before as a runner, I’ll give them the benefit of the doubt that they know what to do.)
I’ve tended to find though, that the optimal group size is 3 players. While only the crypts require 3 players, there are several locations where you need a person in town, but also have a quest where you need to teleport back to town. In those situations, you have a player start to teleport right before the quest pops up, so that when the quest does pop up, you’re only waiting 1 second to start the next portion of the quest instead of 8 seconds.
The question though comes down to, are you ever going to find that group of 3 on a console?