I assembled a Windows 7 machine a few weeks ago, and now I noticed my download speeds are abysmal. Copying to this computer is about 150kbyte/sec, on a Gigabit LAN. Copying from it is fine.
- It is not an ISP issue, as LAN copy speeds have the same problem
- It is not a cable problem, the speed is the same on any cable
- It is not a router issue, because the other computers on the LAN have no similar problems, and I even changed the socket this computer is plugged into on the router
- It is not tied to a specific application, torrent, ftp and browser downloads are equally slow
- It is probably a driver issue, because after reinstalling the Ethernet driver the download speed went up to 500kbyte/sec for half a day
- Setting manual speed negotiation did not help either
- Installing Win 8.1 clean (not just upgrade) did not solve the issue
The NIC is a Realtek PCIe GBE Family Controller according to the Device Manager. It came with the Asrock AM1B-ITX motherboard. The drivers were provided with the motherboard, but I tried the default Windows ones and and the latest from AMD.
Update2: *I just loaded Puppy linux, and the copy speeds were great were great for the first half hour. After that, the same behavior.