Einiges was helfen könnte:
1. Update NIC Drivers
2. Disable IPv4 Large Send Offload, Checksum Offload, and TCP Connection Offload
3. On the RDP client:
[HKCU\Software\Microsoft\Terminal Server Client]
„Keep Alive Interval“=dword:00000001
On RDP server:
[HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server]
„KeepAliveInterval“=dword:00000001
„KeepAliveEnable“=dword:00000001
4.Disable all SNP Features on the server (from admin cmd):
netsh int tcp set global chimney=disabled
netsh int tcp set global rss=disabled
netsh int tcp set global taskoffload=disabled
netsh int tcp set global autotuninglevel=disabled
netsh int tcp set global congestionprovider=none
netsh int tcp set global ecncapability=disabled
netsh int tcp set global timestamps=disabled
5. Disable IPv6 on server and client
6. Change the Security Layer for RDP sessions in tsconfig.msc
http://technet.microsoft.com/en-us/library/cc770833.aspx
7. Reissue the X509 certificates (these are the certificates the TS uses to secure the RDP Session)
http://support.microsoft.com/kb/329896 (Instructions are under the „Resolution“ part)
Also, take a look at this article:
