[2023] Surviving Mars - CTD when saving

This is not a known issue with the game.

Disabling mods does not remove effects they have already had on the saved game file. Do you get this in a new colony that's never had any mods used in it?  

Can I get a log taken after a crash with a completely unmodded colony, thanks.

And, what antivirus app do you use? Make sure MarsSteam.exe is in all its exceptions lists AND that it is not doing realtime scans of the C:\Users\{UserName}\AppData\Roaming\Surviving Mars\ folders.