It was DLC05, actually.
It worked, managed to play a few games but even before mid game, turns take a really long time. Even when set map size to second to largest and only 6 AI, turn times were ridiculously long. I'm gonna go back to base game. A shame really, I've really liked how unique and interesting new factions are.
Even if it was released 4 years ago, I'm surprised there's almost no activity anywhere. Sure, it's not a perfect game, but it's fun, with good replay value.