Downloading from Playstore killed all wired devices

[news]

[wireless]

Strange one here:
Recently downloaded a very large game on my PlayStation (wired connection)
While the download continues (48G took 45 muniutes) ALL other wired devices on my home network showed timeout issues and couldn't access the internet while the PS continued the download.
WIFI connected devices were still useable.
On Pure fibre connection.
Any ideas, suggestions?

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