The average New Zealand home chews twice as much data each month, as its Australian counterpart.

Chorus recorded its busiest day for ultrafast broadband fibre on November 2, driven by an update to the video game, Fortnite.

Of this year's 17 biggest spikes - 14 came from Fortnite updates.

Chorus network strategy manager Kurt Rodgers says fibre is the main difference with Australia.

"Fibre's really the key to having good quality broadband at home. The Australians have taken a different path, they've got multiple technologies, particularly a lot of copper."

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