The release of the Xbox Series X has led to record internet traffic as players power up their new consoles.
The new consoles have to download games and a series of updates before they can be used, as well as many games now requiring constant internet connections to play.
The new Xbox arrived on Tuesday, 10 November. The PS5 will not be released in the UK until 19 November, though it came to other countries including the US a week before.
As well as the large size of new games like Assassin's Creed Valhalla and a pre-load of the new Call Of Duty: Black Ops Cold War, second lockdown and a Windows patch are also believed to have had an effect.
According to Virgin Media, network traffic was 30% higher than the firm's October average, with 108 petabytes of data used, an average of 20.4GB consumed per customer.
That beats the firm's last record, set on June 11, which coincided with the season four launch of Call Of Duty: Warzone.
Meanwhile, TalkTalk said at 9.20pm on Tuesday it recorded a network traffic spike of 6.85 terabits - the equivalent to delivering 571 hours of HD video per second.
Openreach also reported an influx, though it was not enough to beat previous busy days on August 5 and July 9.
"Tuesday saw the anticipated release of the new Xbox Series X, which we've been told needed a large patch during the installation stage, while at the same time iPhone users saw a forced iOS software update," an Openreach spokeswoman said.
"We expect to see another surge in traffic next Friday with the release of the PS5.
"We've had no major outages during this whole period and we're always monitoring our network to identify any areas where we might need to add extra capacity."
Jeanie York, chief technology and information officer at Virgin Media, said: "Keeping the country connected remains a top priority for Virgin Media.
"We've seen previous network traffic records smashed this year as a result of Covid-19 with our customers spending more time at home working, streaming, gaming, scrolling and virtually staying in touch with friends and family.
"We remain focused on supporting our customers with fast, robust connectivity at a time when these connections have never been more important to our lives."
Additional reporting by Press Association
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