Much to my regret, I bought Fallout 4 on GOG just to play Fallout London. (I have other versions of FA4 running successfully with mods on console and via Steam on PC.) Regrettably, it crashes ever minute or two -- despite my running it on a high-end gaming PC and having followed the install instructions to the letter. Even worse, despite having over fifteen years of experience working extensively with mods for Fallout and similar games, none of the supposed "fixes" work. Ultimately, this has been a colossal waste of money and time, which leaves me ill-disposed to ever bother with GOG again. Frankly, given how many people -- including all but one of my friends -- are having trouble making this DLC work at all, it feels like a scam just to sell FA4 games via GOG. Never again!