RcvWindow Limits?

[HQH51]

From SpeedGuide's TCP/IP Analyzer, there's this following information:

bandwidth * delay product:
Your RcvWindow limits you to: 20556.8 kbps (2569.6 KBytes/s) @ 200ms
Your RcvWindow limits you to: 8222.72 kbps (1027.84 KBytes/s) @ 500ms

My RWIN is set to 513920, so that's the results that I get for the RcvWindow. What's with the latency difference anyways? I've seen smaller RWIN values that produce the opposite effect - 200 ms has a lower throughput limitation than the 500 ms one. Is there a place that explains this?

I have a Linksys BEFSR41 v1.38.2 beta, MTU set at 1500, and my laptop is tweaked with SpeedGuide's tweak patch. I've ran a test where the RWIN value was set at default for WinMe and at a custom value of 513920. I tested out online game and latency didn't change much (latency probably lowered a little, but not by much).

[Lobo]

513920 might be to high a RWIN to run, while it might speed up your downloads, the pings and packet loss would be unacceptable,
turn off any fire walls and test pings and packet loss at www.dslreports/tools take tweak test, then lower RWIN