Description : At the end of a turn, the game tries to autosave and then freezes and the said save is corrupted and can no longer be loaded.

Steps to reproduce : I've been trying to get the Shared Vision achievement (I know, it is currently bugged). While playing the Nakalim in a huge galaxy, with a total of 8 empires, 7 Endless AIs, I rush the center of my Disk galaxy and colonize the best system here (best ratio between being centered and having many telluric planets). Then I proceed to maximise the Influence production of said system with every little (or big) Influence bonus I have available. Especially the Cathedral of the Lost, which I'm rushing in the tech tree to build it here as early as possible.

Reproducibility : 5/5.

Expected behavior : When applying said strategy, after a certain number of turns, the game will autosave between turns and then freezes endlessly (pun intended). I've been getting the bug as early as turns 84-85 and as late as turns 115-116.

Version : V1.5.11 S5 GOLD-Public

Notes :

My galaxy setup (it's in French but the sliders should be the same) and the saves files and diagnostics of my last game

Bug Files.zip.