Downloading the 210 GB required to start Grand Theft Auto 6 could take a substantial amount of time on slower internet connections. The estimates range from 46 hours and 40 minutes at 10 Mbps to 28 minutes at 1 Gbps, based on the article’s calculations.
At 25 Mbps, the download is estimated to take 18 hours and 40 minutes. The figures fall to 9 hours and 20 minutes at 50 Mbps, 4 hours and 40 minutes at 100 Mbps, and 2 hours and 20 minutes at 200 Mbps. At 300 Mbps, the estimate is about 1 hour and 33 minutes; at 500 Mbps, it is 56 minutes.
Players are expected to be able to preload the game starting November 12, one week before its November 19 release. According to the article, preloading will be available for both digital purchases and physical editions, which include a code to redeem the digital version. Starting the download early should give players with slower connections time to have the files ready for launch.
Sources: Everyeye.it.