I realize that 1.19e is a beta so expected the slowdown. I try to imagine I'm playing a game of tournament chess. On my very middle of the road computer I'm up to 5 minutes per turn ( turn 450+) and sometimes I forget what was going on the previous turn.
Wow, that's insane. I've never seen more than a few seconds of lag between turns, but granted I do tiny, small, and the sometimes medium maps. I'll have to do a large map this weekend to see how bad it gets. Still, no way it could be worse than CivIV or FFH2.