Exactly. GOG doesn't support resuming downloads, which is a shame tbqh. I'm sure they're working on a solution though.
Woah, that really sucks. I know that's beta and all that but that's still a problem they must solve ASAP. I'm thinking about buying Fallout Tactics, but knowing that I'd have to download 1.6 GB at once I'll wait until they implement some sort of download management.