Yeah, this is the problem we've been having, on all versions so far. Latest one is the most stable but still happens a lot on late game. But I can say that it freezes even when autosave frequency is set to never.

Hi, I'm having the same issues with my multiplayer game where I'm playing with 3 others.
We are not using any mods.
Version is 11.6 64 bits.
My Log, where I was the host: http://pastebin.com/xXSA5Mpu.