He is on
Fulgora
and me on Nauvis.At the moment of crash he built an accumulator and I used bots to build a defense wall
(Just standing still since I was watching a video while "building">. On the very far right if you check the savefile).
I can't reproduce this crash. Him building that accumulator and me finishing what I built with bots didn't crash the game after reloading.
We tried 2 more times after the initial crash.
No mods were used. We play vanilla Factorio Space Age
My system is up to date. Win11. Graphicscard is up to date (RTX 3070TI).
If I have more info on this I will update it. I hope the logs or savefile may bring some light into this random crash.