📎 AI Summary:
The thread discusses a user's issue with slow broadband speeds, with diagnostic tests indicating buffer limitations affecting throughput. The user is with Zen on a BT line, not VirginMedia, and is advised to run a Speedtest.net for further details. Overall, the conversation suggests troubleshooting steps for improving speed, with the user providing specific speed test results showing significantly reduced download and upload speeds.
nehoma

nehoma

Honorable Member
Joined
May 8, 2009
Messages
487
Thread Author #1
Hi guys
I am experiencing a slow broadband speed and a diagnostic test says the following:-

"The theoretical network limit is 41.31 Mbps The NDT server has a 84.0 KByte buffer which limits the throughput to 5.02 Mbps Your PC/Workstation has a 63.0 KByte buffer which limits the throughput to 1.90 Mbps The network based flow control limits the throughput to 1.94 Mbps"

Can anyone please tell me what to do about this
 

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nmsuk

nmsuk

Essential Member
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Sep 7, 2009
Messages
4,328
#2
nehoma,

Do you have a VirginMedia connection by any chance? They're rolling out upgrades at the moment. If on Virgin give them a call and they'll run some tests on the connection and reset the modem if necessary.

Just out of interest what are you using for diagnostics?
 

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nehoma

nehoma

Honorable Member
Joined
May 8, 2009
Messages
487
Thread Author #3
Not virgin.
I am with Zen on a BT phone line

cant remember the diagnostics website.
can you recommend one please
 

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nehoma

nehoma

Honorable Member
Joined
May 8, 2009
Messages
487
Thread Author #5
upload speed 0.35 Mbs
Download speed 1.9Mbs

possible speed 8 Mbs
usual speed was 7Mbs plus or minus 500kbs
 

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