I have over 480 hours on Steam in Fallout 4. I have been replacing my games on Steam with ones on GOG when they become available. I don't like having to run the Steam client, here I don't have to run Galaxy, and I like that. As I understand the Bethesda "Mods" won't be on the menu, that's fine, I use Vortex for my mods, which I have downloaded already in a folder. At least I won't burn up my data having to re-download the 93GB of it from Steam several times because of a problem. I have a 1.4TB data cap per month, and I had to download the game so many times getting it to work right, it about had me reach my data cap. No more of that.