Hi, I plugged an 2.5" 7200rpm external hdd to my AirportExtreme. I can share it without any problem. But I after start using that drive I notice a bid drop on my network performance. I have 2 ip-cameras installed, while they were just fine before, now I can watch them at 2-3fps at best. File transfer rates also dropped dramatically. If I remove the HDD, it goes back to its normal state... Everything runs just much faster... Any idea why I am experiencing this? TIA!