The Fallout 76 PC and PS4 beta featured multiple launcher issues that forced gamers to redownload the game files after preloading everything beforehand. In the end, thousands of people couldn’t access the exclusive closed beta for pre-orders. Instead of testing the game, they had to redownload the 50GB files once again.
Source: N4G PC Fallout 76 PC and PS4 Beta Marked By Chaos and Launcher Issues