I know there's been lots of threads about this already, but can you please work on this bug ASAP? Its so painful.. 200+ turns and multiple hours invested and the game becomes unrecoverable. Has happened a couple of times now.
PC was using around 5GB RAM out of 8GB
I was really looking forward to trying out the lategame too (yeah im slow - no patience for intense micro).
The good news is, at least you've made an awesome game where a perma-crash after 200 turns is gutting. Can't wait to see Beta 5 !