A minor tweak to Steam will soon let you change the way you download that monstrous 250GB update
If your PC has ever started randomly roaring, and you check Steam only to find Space Marine 2 is panic-installing a 9 billion gigabyte update, then perhaps Valve's new upcoming feature is for you. For most of us, Steam simply slurps down fresh gigs of installed games automatically when a new update is released (and sometimes schedules the updates according to its own capricious whims). But the platform is testing a new option in the beta client, which lets you set download behaviour to git new gigs only when you actually launch a game. This would be a terrible curse, for reasons I will explain, but it's only going to be an option - not the new default.