REGEDIT4

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP]
"DefaultRcvWindow"="256960"
"DefaultTTL"="64"
"PMTUDiscovery"=dword:00000001
"PMTUBlackHoleDetect"=dword:00000000
"SackOpts"="1"
"Tcp1323Opts"="1"

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP]
"Tcp1323Opts"="3"

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP\Parameters]
"MaxDupAcks"=dword:00000003