Cyberpunk 2077 was able to be preloaded for a few days on PC and, it seems the game will set a new bandwidth record on the Valve platform.
Steam peaked towards 23.5 terabytes/s on December 7, the same day that Cyberpunk 2077 preloads went live. In the same hour that the preloads were activated, an increase of about 8 terabytes/s was observed until reaching a peak of 23.5 TB/s
Steam only shows bandwidth data for the last 48 hours, so it's difficult to know exactly when the previous spikes occurred. However, it seems that the previous record was set by the launch of PUBG 1.0 , in 2017. At that time, the title reached 2,912,831 concurrent players.