personally, I use F1 F2 F3 and F4 cheats, I disable them before traveling to Ark, F7 and F9 in the shops of the Ark before deactivated, which does not prevent the crash every time I left the ark ...
I restarted the game in extreme difficulty and man of iron, no more crash with this technique:
when you leave the arch, do not validate the destination, do "Escape", select your destination again and confirm, you travel without crash ...
find totally by chance, wanting to check my inventory before leaving ... lol
good luck