Bringing you another MMG Tutorial, Fancycam guides you through fixing a common bug in Fallout 4 whereby 'Steam Cloud Saving' results in an immediate crash to To run the game as an Administrator: Right-click Fallout 4 in your Steam Library. Just like any Bethesda game Fallout 4 tends to crash and freeze and somehow it always feels like it happens in the worst possible moment.
Fallout 4 Keeps Crashing Xbox One No Mods If not, then at least you could eliminate that as being the problem.