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Bandwith Issues Chrome/Firefox/Edge

We have been using Sophos intercept x advanced with MTR for about 6 weeks. Since then, our bandwidth has dropped 90%. We use a gigabit internet connection and have previously achieved the following values in a speed test in the browser: Down: 900MB/s Up: 800MB/s

Now, if we're lucky, we'll get Down: 60MB/s Up: 300MB/s.

We found out that it is due to the following settings:



If these settings are deactivated, we have full bandwidth when surfing again. But we don't want to leave them disabled.


This is not a condition, the support from Sophos is not getting anywhere either. We expected more...


here are the screenshots from the speedtest:

deactivated settings:


activated settings:

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Top Replies

Sophos User930 over 1 year ago in reply to btdb +3

I’m not suggesting that. Just trying to narrow down the specific feature within the NTP component. I think this is one for Support/Dev.

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0 Anthony Albano over 1 year ago

Any word on the permanent fix?
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+1 Qoosh over 1 year ago in reply to Anthony Albano

The release of Sophos Core Agent 2022.3.0.56 has begun today. You can read more about the changes and fixes included with this release on the following page by selecting "Endpoint > Sophos Core Agent > All versions."
- https://docs.sophos.com/releasenotes/index.html

The two most notable changes are related to download speeds and issues with large file downloads. If you require access to this version sooner, I suggest opening a case with our support team.

Kushal Lakhan

Team Lead, Global Community Support
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0 Christof Schuppan over 1 year ago in reply to Qoosh

Hi, i've got his update yesterday but there is no Bandwith Improvement in our Company. I'm forcing this problem for round about 6 month. Can you send me the "Hot Fix", so i will test this temporary Solution. Thx

-- Core Agent: 2022.3.0.56, Sophos Intercept X: 2022.1.3.3
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0 SophAyla over 1 year ago in reply to Qoosh

When will the 2022.3.0.56 update be available for everyone?

Our Core Agents are still on version '2022.2.2.1 BETA'.
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0 IT Department66 over 1 year ago in reply to SophAyla

Our agents are still on 2022.2.2.1 as well. Getting frustrated with the delay on this!
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0 Christof Schuppan over 1 year ago in reply to Qoosh

Hi, i've got that update 21 days ago and can say, that the download speed on Windows 11 Enterprise Machines did not get that performance boost like it is announced to. My Downloadspeed is about 20-40 mbit faster than before (but only one fourth till half Speed of other Machines without Sophos). After about 10 Seconds, the downloadspeed goes slower and slower.

Do you have any ideas? I think, the Bug is not completely fixed, but a kind better than before. Thx
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0 Qoosh over 1 year ago in reply to Christof Schuppan

Version 2022.3.0.56 does include changes to the way the endpoint will handle web connections. If you're continuing to experience issues, I'd suggest opening a support case with our team, as further work may be needed.

It would be best for our team to understand what occurs with the underlying scanning components when the download speed decreases.

Kushal Lakhan

Team Lead, Global Community Support
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0 Zeu$ over 1 year ago in reply to Qoosh

im on the new Core agent 2022.4 and im still having issues with Internet Scan and Web Control not letting URLS to load. also the Threat Protection hog the bandwidth like crazy.
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0 Zeu$ over 1 year ago in reply to Qoosh

im on the new Core agent 2022.4 and im still having issues with Internet Scan and Web Control not letting URLS to load. also the Threat Protection hog the bandwidth like crazy.
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0 Qoosh over 1 year ago in reply to Zeu$

Thanks for raising this with us. If your original support case is still open, I'd suggest following up with our GES team to look into this. Otherwise, you may want to open a new case.

Kushal Lakhan

Team Lead, Global Community Support
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0 Zeu$ over 1 year ago in reply to Qoosh

how many cases you guys GES need to resolve this issue? are you asking everyone in this thread to open a case? the 2022.3.0.56 cause this issue starting November 11th.
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0 Qoosh over 1 year ago in reply to Zeu$

A case is only required if you need early access to the Core Agent version. Otherwise, if you have a new/unique issue, this will need to be investigated separately.

Kushal Lakhan

Team Lead, Global Community Support
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0 Cleber Vicentini 11 months ago in reply to Qoosh

What is the solution and when it cames available? I saw a lot of ticket... cases... information but no solution are provided.
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0 Kevin McConnaughey 11 months ago in reply to Cleber Vicentini

I talked a gentleman somewhere in these forums. He was able to get Core Agent 2022.4.0.4 and use Intercept X 2022.1.3.3. He said it helped him. I was also able to get the Core agent 2022.4.0.4 and use Intercept X 2022.1.3.3 through a Ticket to support. My speed did not change. So I toggled NTP Off to test. I was not able to connect to server or any browser. I reverted back to previous settings. With my previous settings NTP=ON 250 mb....NTP=OFF 950+mb on a 1Gb service.
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0 Sophos User6855 10 months ago in reply to Kevin McConnaughey

My Sophos Endpoint is now at Core Agent Version 2022.4.0.4 and my Sophos Intercept X is at 2022.1.3.3.
My download speed is still 10 times lower then what it should be.
As Kevin said, turning NTP off gives me my real download speed.
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0 Sophos User930 10 months ago in reply to Sophos User6855

Hello. How are you measuring it? If you use the speedtest downloadable app and compare that to the website test, do you see the same 10x difference? Thanks.
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0 Sophos User6855 10 months ago in reply to Sophos User930

I just tried the speedtest downloadable app and I got the right download speed.
Only the web version gives me a bad result.
Thank you !
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0 Sophos User930 10 months ago in reply to Sophos User6855

Thanks for the confirmation. Out of interest, how does Fast.com rate the speed? I just wonder if the web protection features that apply for browser processes just don’t play well with certain speed test sites. Many thanks.
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0 Sophos User6855 10 months ago in reply to Sophos User930

fast.com gives me the same bad result as speedtest.net by Ookla
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