The launch of Xbox Series X/S and Call of Duty games drove record broadband data use for leading UK providers on November 10.
Several service providers told the BBC that video game downloads were responsible for much of the activity, which resulted in some customers experiencing reduced speeds.
In addition to the Xbox Series X/S launch on Tuesday, several other factors are believed to have contributed to record data usage.
These include Call of Duty: Modern Warfare and Warzone updates up to 65 GB in size, Call of Duty: Black Ops Cold War pre-loads up to 190 GB, a 65 GB Destiny 2 update, and the release of Assassin’s Creed Valhalla.
BT reported peak broadband traffic of 18 terabits per second (Tbps)—which is equivalent to about 1,500 hours of HD video being delivered every second—up from its previous record of 17.5 Tbps.
Providers Zen Internet and City Fibre also had record days.
Network infrastructure provider Openreach reported 174 PB of data consumption on Tuesday, which was high but didn’t match a figure of 193 PB on August 5, when Warzone and Modern Warfare Season 5 launched.