Yeah, according to speedtest, my connection is around 30/6 Mbps. But my Steam download rate only tends to be 1.8-2 MB/s. FO4 took 3.5-4 hours.

My friend had to leave it install, and go out, it took ages, when im downloading off steam, im always searching the world for better download speed, i was downloading from Austria for a long time because the speed was great, shifted to Germany for awhile, and back to Australia which can really be terrible, but they got back home to a 24 gig download.