Comcast speed only 45% of advertised!!

[Scotsman]

My download connection remains around 45% to 50% of Comcast's advertised speed for its Gold Tier Service (6000/768).  Upload speeds are consistently at 95% to 100%. 

Prior to this recent upgrade, my connection was at 100% to 110% of advertised speed (3000/384).  I used TCPOptimizer to tweak the registry settings. 

I have installed Cablenut and applied the XP SP2/MSS 1460 ccs file..  Unfortunately, it hasn't fixed the problem.

Any help is greatly appreciated!!  Here's my stats per your sticky:

1. XP Pro SP2. Fix applied.

2. Comcast Gold Tier.  Advertised: 6000/768

3. Installed Cablenut.  Used: Cable & DSL 6000 768.ccs for XP/SP2. 

http://ttester.broadbandreports.com/tweak/block:2353b22?service=cable&speed=6000&os=winXP&via=normal

4.

:::.. Download Stats ..:::

Connection is:: 2557 Kbps about 2.6 Mbps (tested with 2992 KB)

Download Speed is:: 312 KB/s

Tested From:: http://www.testmy.net/

Test Time:: Fri Feb 18 2005 22:27:20 GMT-0500 (Eastern Standard Time)

Bottom Line:: 46X faster than 56K 1MB download in 3.28 sec

Diagnosis: May need help : running at only 88.42 % of your hosts average (attbi.com)

Validation Link:: https://testmy.net/id-S2KE17CPX

:::.. Upload Stats ..:::

Connection is:: 696 Kbps about 0.7 Mbps (tested with 2992 KB)

Upload Speed is:: 85 KB/s

Tested From:: http://www.testmy.net/

Test Time:: Fri Feb 18 2005 22:29:47 GMT-0500 (Eastern Standard Time)

Bottom Line:: 12X faster than 56K 1MB upload in 12.05 sec

Diagnosis: Awesome! 20% + : 123.79 % faster than the average for host (attbi.com)

Validation Link:: https://testmy.net/id-MYS9TL1GK

TCP/Web100 Network Diagnostic Tool v5.3.3a

click START to begin

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 818.79Kb/s

running 10s inbound test (server to client) . . . . . . 4.61Mb/s

Your PC is connected to a Cable/DSL modem

Information: Other network traffic is congesting the link

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 815.61Kb/s

running 10s inbound test (server to client) . . . . . . 1.82Mb/s

Your PC is connected to a Cable/DSL modem

Information: Other network traffic is congesting the link

Tracing route to testmy.net [67.19.36.6]

over a maximum of 30 hops:

  1    2 ms    2 ms    2 ms  c-XX-XX-XX-XX.mw.client2.attbi.com [XX.XX.XX.XX]

  2    14 ms    12 ms    14 ms  10.241.128.1

  3    10 ms    14 ms    20 ms  c-66-56-23-81.atl.client2.attbi.com [66.56.23.81

]

  4    17 ms    13 ms    10 ms  66.56.22.70

  5    12 ms    17 ms    39 ms  c-66-56-23-46.atl.client2.attbi.com [66.56.23.46

]

  6    13 ms    12 ms    12 ms  12.124.64.21

  7    13 ms    15 ms    14 ms  tbr2-p013801.attga.ip.att.net [12.123.21.101]

  8    54 ms    34 ms    26 ms  tbr1-cl1.dlstx.ip.att.net [12.122.2.89]

  9    43 ms    37 ms    27 ms  gar1-p360.dlrtx.ip.att.net [12.123.196.101]

10    34 ms    28 ms    24 ms  12.119.136.14

11    30 ms    35 ms    41 ms  dist-vlan32.dsr3-1.dllstx3.theplanet.com [70.85.

127.61]

12    28 ms    25 ms    27 ms  dist-vlan21.dsr1-1.dllstx2.theplanet.com [70.85.

127.67]

13    33 ms    27 ms    27 ms  dsr2-2-v2.dllstx4.theplanet.com [12.96.160.40]

14    60 ms    33 ms    26 ms  gig1-0-2.tp-car9-2.dllstx4.theplanet.com [67.18.

116.86]

15    29 ms    28 ms    26 ms  6.67-19-36.reverse.theplanet.com [67.19.36.6]

Trace complete.

5. thru 12. Done.

[VanBuren]

hey Scotsman and welcome to the forum

if you have a router, try bypassing it and connect direct to modem via ethernet

VanBuren

[Scotsman]

Hey VanBuren,

Thanks.  Your site was recommended in another forum and I'm impressed.

My apologies.  I should have mentioned that I am behind a Netgear WGT624 router.  I first suspected the problem to be caused by the router and connected my pc via ethernet (100 Mbps) to my Motorola SB5100 modem.  Unfortunately, the difference in speed was negligible.  I just connected again to make sure nothing had changed and here's my stats:

:::.. Download Stats ..:::

Connection is:: 2508 Kbps about 2.5 Mbps (tested with 2992 KB)

Download Speed is:: 306 KB/s

Tested From:: http://www.testmy.net/

Test Time:: Sat Feb 19 2005 07:13:40 GMT-0500 (Eastern Standard Time)

Bottom Line:: 45X faster than 56K 1MB download in 3.35 sec

Diagnosis: May need help : running at only 86.63 % of your hosts average (attbi.com)

Validation Link:: https://testmy.net/id-HJBQZNAFK

:::.. Upload Stats ..:::

Connection is:: 633 Kbps about 0.6 Mbps (tested with 2992 KB)

Upload Speed is:: 77 KB/s

Tested From:: http://www.testmy.net/

Test Time:: Sat Feb 19 2005 07:16:03 GMT-0500 (Eastern Standard Time)

Bottom Line:: 11X faster than 56K 1MB upload in 13.3 sec

Diagnosis: Awesome! 20% + : 103.54 % faster than the average for host (attbi.com)

Validation Link:: https://testmy.net/id-N5I6CTZJ3

I've contacted Comcast and they're showing 6Mbs from their end.  They're sending a tech out Monday to check my line.  Is there anything else that you can think of trying at this point?

Thanks again for your help!

[VanBuren]

open cablenut, and click delete cablenut tweaks and click save to registry

now reboot, also power cycle your modem for 30 seconds

when using router, set your NIC to 100 Mbps full duplex

wait for the tech to check your connection, and when they fixed it post again and we make it even faster 

VanBuren

[Scotsman]

Yep, have done all of the above and my wired NIC is configured to 100Mbps (full duplex).  I'll update you on Monday after Comcast's visit.  Hopefully, things will be resolved and I can take you up on your offer to make it faster!!

Thanks!