[sc00b4s7eve]

Probably pretty similar but these always get me the best & most consistent results:
[HKEY_LOCAL_MACHINE\Comm\Tcpip\Parms]
"TcpWindowSize"=dword:00256960
"TCP1323Opts"=dword:00000001
"TimerWheelSize"=dword:00000005
"TcpMaxDataRetransmissions"=dword:0000000a
"TcpMaxConnectRetransmissions"=dword:0000000a
"IGMPLevel"=dword:00000000
"TcpMaxDupAcks"=dword:00000002

and I'll tell you why:
Any time the Rwin (aka-"TcpWindowSize") is over 64k (+65536) windows mobile automatically enables window scaling.
-Thats why 98304 is working better than you stock settings.
-The reason why 256960 works better, for me, is because of the way window scaling works. Basically, it steps down faster than it steps up. So start larger... it'll adjust.

Just check out the picture. Granted it was in the middle of the night, but it is possible.