my game has been doing that a lot too. every time I go into the atomic wrangler it crashes, but most of the time it'll crash every 15 minutes or so, I tend to just save every 5 minutes just to be on the safe side, I think it might be because of the Nevada skies mod, because I uninstalled it a little while ago and my game hasn't crashed for a long while either that or I think it's the mod that adds more people to the wasteland. modding this game gets really frustrating I've never had to deal with this before. Sometimes the game will crash if I update mods in which I have to spend hours updating the same mods over again until the game finally works. sometimes it'll be completely fine when I play it then I'll exit out to look up more mods, start up the game (with out the mods installed), and the game will crash when I open it (it tends to crash about 5 times before it starts to work again). I remember several times where I had to uninstall and re-install all my mods to look for one or 2 mods that was making my game crash, it's extremely frustrating to spend hours on that only to get at most 20 minutes of game-time. if you have the mod loader try updating your mods for a good hour or so, it might help.