terrible DL speeds HELP

stovebolt1 · 08-26-2009, 01:52 PM

HI;
im having incredibly slow downloads... im running windows vista home premium on a dell xps410, intel core2duo, 4gigs mem.Fios 25/15Mbps service actiontec MI424wr router...
ive updated the boards ethernet drivers..ran every recommened anti spy ad and malware program as well as 2 separate antivirus progs...nothing.
speed tests online.. 603kbps download 2256kpbs uploads...downloads start at a moderate rate and within a few seconds are crawling to almost single digits..a 2 gig gps map upgrade took 12 hours :(, speeds are same for firefox or explorer
ive followed all the net advice to change all the vista settings for optimum dl's.. reset winsock. odd thing is i have 2 other home wired pc's through my router and they are NOT affected...and yes i changed out the ethernet cable already.
ran hijack and dont see anything out of the ordinary running..
heres tcp analyzer results
« SpeedGuide.net TCP Analyzer Results »
Tested on: 08.26.2009 15:50
IP address: 71.185.xx.xxx
Client OS: Windows Vista

TCP options string: 020405b40103030201010402
MSS: 1460
MTU: 1500
TCP Window: 65700 (multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 16425
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 2628kbps (329KBytes/s)
BDP limit (500ms): 1051kbps (131KBytes/s)
MTU Discovery: ON
TTL: 109
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

if ANYONE has any suggestions ill be more than happy to try them

Thanks in Advance

Suncoast · 08-26-2009, 04:16 PM

I believe your rwin scaling is too low. Try this Speedguide link again to analyze your settings. You should see some suggested changes to make with your analysis. Everything else looks good.

Edit: In case nobody has mentioned this already, some 3rd party firewalls and anti-virus products do a "stateful packet inspection" at the application layer of the network stack. This can seriously reduce the speed of large file transfers.

08-26-2009, 01:52 PM	#1 (permalink)
stovebolt1 Registered User Join Date: Aug 2009 Posts: 1 OS: Windows Vista home premium	terrible DL speeds HELP HI; im having incredibly slow downloads... im running windows vista home premium on a dell xps410, intel core2duo, 4gigs mem.Fios 25/15Mbps service actiontec MI424wr router... ive updated the boards ethernet drivers..ran every recommened anti spy ad and malware program as well as 2 separate antivirus progs...nothing. speed tests online.. 603kbps download 2256kpbs uploads...downloads start at a moderate rate and within a few seconds are crawling to almost single digits..a 2 gig gps map upgrade took 12 hours :(, speeds are same for firefox or explorer ive followed all the net advice to change all the vista settings for optimum dl's.. reset winsock. odd thing is i have 2 other home wired pc's through my router and they are NOT affected...and yes i changed out the ethernet cable already. ran hijack and dont see anything out of the ordinary running.. heres tcp analyzer results « SpeedGuide.net TCP Analyzer Results » Tested on: 08.26.2009 15:50 IP address: 71.185.xx.xxx Client OS: Windows Vista TCP options string: 020405b40103030201010402 MSS: 1460 MTU: 1500 TCP Window: 65700 (multiple of MSS) RWIN Scaling: 2 bits (2^2=4) Unscaled RWIN : 16425 Recommended RWINs: 64240, 128480, 256960, 513920, 1027840 BDP limit (200ms): 2628kbps (329KBytes/s) BDP limit (500ms): 1051kbps (131KBytes/s) MTU Discovery: ON TTL: 109 Timestamps: OFF SACKs: ON IP ToS: 00000000 (0) if ANYONE has any suggestions ill be more than happy to try them Thanks in Advance

08-26-2009, 04:16 PM	#2 (permalink)
Suncoast Registered User Join Date: Jul 2009 Location: Largo, FL, USA Posts: 389 OS: XPP, Linux, 2003, Cisco	Re: terrible DL speeds HELP I believe your rwin scaling is too low. Try this Speedguide link again to analyze your settings. You should see some suggested changes to make with your analysis. Everything else looks good. Edit: In case nobody has mentioned this already, some 3rd party firewalls and anti-virus products do a "stateful packet inspection" at the application layer of the network stack. This can seriously reduce the speed of large file transfers. Last edited by Suncoast; 08-26-2009 at 04:30 PM.