I have spent alot of time on Windows 7 using a Realtek 10/100/1000Mb PCIe 8168/8111C built-in NIC with massive problems with UPLOAD only. I am using a 100megabit connection in Hong Kong and while I can download from the HKIX at 10.0MBytes constantly, I have been experiencing extreme network stutter and slow uploads (<1MByte/s
) within my Internal LAN.
I have been chasing every new release of Realtek's drivers (including the latest 7.003 released on 1 June 2009), without success.
Cut a long story short, through desperate testing, I found that each driver version gave me different results, suggesting that it IS a driver related issue. The answer = Version 6.206.0502.2008
Found here: REALTEK - Download driver for RTL8168B/8111B
I can now upload at over 7MBytes/s
(limited to my 10mb server) thereby resolving ALL my network issues in Windows 7 (ethernet drop/connection loss/DNS resolving). As I had suspected, all those issues were related to and ONLY to poor upload speeds (stutter).
I see many who have identified that there is indeed a problem with uploading only to be shunned off by senior members. I too have went through possibilities such as Half Open TCP ports, TCPIP.sys patching and constant fiddling with NIC settings (Speed & Duplex).....This is your answer.
I hope it resolves problems for everyone. Good luck!