When wired pc is on, other devices suffer

[Fewzy]

Hi all, I have the 1.6 gb full fiber package with the new WiFi 7 pro hub and the extender. My PC is wired directly to the hub via Ethernet. When I turn my pc on, not even downloading anything other devices connected via WiFi suffer / lag / connection issues. The extender flashes as if it’s lost connection also. Any ideas why this would be? 

[JimM11]

@Fewzy Have you looked at the PC Network activity you can see it either task manager or the resource monitor if a windows style PC!