I have recently noticed that on websites that require **multiple small requests**, such as google maps, I have a tons of timeout issues. Similarly, browsing is not as smooth as it is with other devices connected to the same router (wirelessly).

The funny thing is that for large files the throughput is really good. I can torrent a file and fill the connection limit (about 15Mb/s) without any issue. Similarly, I can copy from my file server on the network at 45MB/s flawlessly.

But the worst of it is that as soon as I connect via the wirless adapter of my [ASUS P8Z77-V](http://uk.asus.com/Motherboards/Intel_Socket_1155/P8Z77V_DELUXE/) motherboard everything run noticeably better, including google maps. Unfortunately I can only get up to 300Mb/s on wifi, which means that transfers to my file server are now as low as 5MB/s.

I have a [BiPAC 7800](http://www.billion.com/product/wireless/BiPAC-7800N-11n-ADSL2-Broadband-Firewall-Router-Gigabit.html) gigabit router directly connected to my PC using a cat 6a cable. I tried to (stress) ping servers out there, but I *never* got a packet loss. Since my motherboard has two LAN controller I also tested both: no dice. :(

Does anyone have any idea of what could be wrong?

Btw, I am using windows 7 professional.