I like to play slower games against multiple AI opponents, which was never a real problem in ES 1.  So far, in ES 2, the game has consistenly failed after about 250 turns, with the game hard locking on around turn 250 and above.  Attached is a save file from the latest game that I attempted to run, with it dying on turn 286, with ending the turn causing the crash issue.  No idea if this is a bug or something I need to fix.

DxDiag.txt

output_log.txt

Diagnostics - 2018'02'12 @0050'39''.html