JSI Tip 9731. You experience slow network performance using ADSL on Windows 2000 or Windows XP?JSI Tip 9731. You experience slow network performance using ADSL on Windows 2000 or Windows XP?

You have a high bandwidth and high delay network connection, like ADSL (Asymmetric Digital Subscriber Line). When you perform a network related task, like viewing this site on the Internet, the site appears slowly.

This behavior can be the result of having a TcpWindowSize that is set to low.

To workaround this behavior, set the TcpWindowSize Value Name, a REG_DWORD data type, at HKEY_LOCAL_MACHINESystemCurrentControlSetServicesTcpipParameters, to a higher number. The default is 8760, and the maximum is 65535.

NOTE: You can use REG.EXE, built into Windows XP, or installed on Windows 2000 from the Support Tools on the operating system CD-ROM:

REG ADD HKLMSystemCurrentControlSetServicesTcpipParameters /V TcpWindowSize /T REG_DWORD /F /D

NOTE: See Windows 2000 does not use TCPWindowSize when accepting a connection?