It makes perfect sense actually, considering both the SATA controller and the NIC are using the PCI bus. And what does a wireless adapter have to do with an onboard NIC? The wireless is using USB which is far slower than NIC which uses the PCI bus. One has nothing to do with the other. That's pointless because Windows ACPI overrides the BIOS instructions and has done ever since the introduction of ACPI processors. Anyway, you're always going to get some lag with onboard A/V devices..