Kaspersky
Question

Dramatic internet speed decrease after KTS 2019 install [UN-CROSS-POSTED]


Userlevel 1
I reimaged my system recently and measured my internet speed on a complete clean system. My ISP declared my fiber to deliver 500 Mbps and I can get even more - 510-530 Mbps.

My OS: Windows 10 Pro x64 1809,
My KTS: 19.0.0.1088 (d)

Unfortunately right after KTS install I'm getting only 80-120 Mbps speed! Nothing else has been modified in the OS, just KTS installed. When I exit KTS and re-measure, I'm getting up to 300 Mbps. It's still far from the full throughput, but much better.

Anyway, it seems clear it's KTS that obstructs the network, however I have no idea how. I've already disabled all (or most) of the settings that might have impacted traffic speed:
  • injecting javascript to screen pages
  • limiting traffic at metered connections
  • screening encrypted connections
  • auto-detecting proxy
None of those settings has improved my connection speed at all. Does anyone has any ideas what else can be tried?

I remember I did the same test few months back with KTS 2018 and even though the network speed got a bit down (by say 10%) there was no such disaster as with KTS 2019. I'm really thinking on switching into some other security provider...

39 replies

Have same problem, but issue with windows 10 x64 may update.

After update, KIS 20.0.14.1085(k) limit all download speed on my wifi is 2mp/s.

Exit KIS, my download return max speed is 6mb/s.

Userlevel 7
Badge +8

Hello @Ronald.Johnson.55

Welcome!

  1. Did the issue pre-exist patch J?

Please let us know what they say?

Thank you:pray_tone3:

Flood:whale:

I have the same issue with KIS 20.0.14.1085 j with 1 gbit fiber.

It is obvious that KIS affects the speed. If  I exit KIS speed returns to 1 gbit. I measured with speedtest console app in Windows 7.

I tried whatever suggested in this post. No luck.

Any feedback from Kaspersky on this matter?

Userlevel 7
Badge +8

Hello @MisplacdTxn,

Thank you for replying:ok_hand_tone3:

As per Kaspersky latest advice, for version 20.0.14.1085 patch H , quote  “We've further optimized the use of computer resources.”

Please do the following:

  1. Confirm Kaspersky Security Cloud requirements?
  2. Check all Windows updates have a “successfully applied” status?
  3. Check the router/modem/network device’s firmware is up-to-date?
  4. Check Software compatibility, just to ensure there’s no conflicts?
  5. Clean-up of C:\Windows\Temp & C:\Users\YOURNAME\AppData\Local.
  6. Uninstall & reinstall Kaspersky Security Cloud, making sure to fully shutdown & restart the device between each procedure. 

If the issue persists, the best course of action, if Kaspersky Security Cloud is licensed, is to raise a request with Kaspersky Technical Support, they will require a GSI & Windows Logs & they will request Traces, captured as the issue is replicated. The Support Team will provide the correct steps to capture the Traces. 

After logging the request, you’ll receive an automated email with an INC+12digits reference #, then, normally within 5 business days, a Kaspersky Technical Support human will contact you, also by email; you can continue to communicate with them via email or by updating the INC in your MyKaspersky account.

Please let us know what they say?

Thank you:pray_tone3:

Flood:whale:

Resources:

Kaspersky Security Cloud 20, "other" errors

 

Roughly the same yes,, which is why I was curious if it got worked out,  Using latest Security Cloud myself,   but prior to installation was seeing downloads  in the low 430’s to as high as 570 Mbps on my main system,,  after installation   17-24 Mbps.  running off the same router , 2 other systems , less capable hardware wise are still seeing 400-500 Mbps and wireless  devices  no lower than low 40’s Mbps.  Even a crappy old dell running ubuntu gets 200Mbps  on a wired connection.  I stopped rolling out to the rest of my systems as a result.

Userlevel 7
Badge +8

Hello @MisplacdTxn
Welcome!

Are you reporting the same issue as @mikolajek ?

Please let us know the details? 

Thank you:pray_tone3:

Flood:whale:

Did this ever get worked out?  

 

Userlevel 7
Badge +8
Good day, @mikolajek
Any news on your problem with internet connection speed?
Userlevel 1
@Friend, later after posting I actually removed 2020 and cleared everything with Kavremover, then re-installed 2020 with no legacy settings. No improvement whatsoever...

Support told me that the code changes in 2020 were i.a. directed into improving the scanning driver, so they should positively impact the network performance.

I did some more test and the speed varies, but in general the results are worse than for 2019...
Userlevel 7
Badge +8
@mikolajek is it so bad?
In 2020, the version promised the opposite to improve this moment.
Maybe the problem is in the old settings Kaspersky Total Security ?
Userlevel 1
Some update: Support has advised me to upgrade to the 2020 RTM version to see if it helps. I've installed version 20.0.14.1085 and... it's much worse! 😮 All I can get now is 60-65 Mbps...
I saved the app settings, so 2020 is operating with the KTS config that assured the best possible networks performance I could get with 2019.
Userlevel 7
Badge +8
@mikolajek new patches are delivered to all users gradually - over several days. To install the patch, run the update. When finished, restart the computer. If the patch did not come, wait until it is available to you.
Userlevel 1
@Friend, thank for this!

My support case No is INC000010341584. I'm a bit disappointed so far, as I entered all the necessary info and the GSI report, and in return I was asked to provide the very same info and GSI report that was already there!

I'm aware of the E patch, but since I have a fresh KTS install, it looks it hasn't been yet enabled to me (as explained in the ticket). I do the manual database update everyday hoping it will get downloaded, but so far no luck. Is there any way to enforce this module update?
Userlevel 7
Badge +8
Good day, @mikolajek
Enter here the number of your appeal to support
By the way, the patch E was recently released, there should be changes that affect the speed of the Internet connection, try installing it: https://support.kaspersky.com/13877#block1
Userlevel 1
I had a technician visiting me last week on this issue and he confirmed everything was fine.

Moreover, I have my business laptop (with another security suite) also cable-connected to my router and I can get the full speed on it.

Finally, as I said - I did several speed test before I installed KTS and after doing so. In the meantime there were no other installations, updates or other configuration changes. KTS seems then to be the only culprit. It's possible it can be an isolated situation, but I do believe it needs to be validated by Kaspersky Support.

I've placed my support request over 2 days ago and till now, no engineer has even been assigned to review it 😒
Userlevel 7
Badge +2
I agree with Bean Slappers, maybe check with your IP Providers and get them to check your connection and speed to Router.
We seem to have no issues with internet speed with Kaspersky Internet Security 2019 installed on all home computers.
Userlevel 1
Sunmit a ticket to tech support, because it shouldn't be happening to that extent.

Another though have you asked your ISP about the speed drop?

But as I said before it shouldn't be that bad of a drop.
Userlevel 1
@BeanSlappers, oh sure - I've played with my whole network infrastructure for a long time, with no effect again.

I'm running Dell XPS 9360, with i7-7500U, 16GB RAM, 512GD SSD. The bottleneck could be the Realtek network card, but 1. I've also tweaked its parameters, and 2. the issue appeared somewhere with KTS 2019 (unfortunately I can't say which build), as in the past I had no throughput problems with this card.
Userlevel 1
That is really strange, because I personally have 1Gbps fiber, and I am not having problems with it.

Have you rebooted your router?

What is your system specs?
Userlevel 1
Thanks, @BeanSlappers, I've already got both those tweaked and still no luck...

I have the impression that KTS driver/filter is doing this lousy job. I tried disabling individual KTS modules to see if there was any speed difference, and there was none. The only "solution" is to completely exit application (then I can get 60% of my nominal link speed) or completely uninstall it (then 100% is back). However the uninstallation.... You know...
Userlevel 1
Hey everyone try this if you are having a speed drop

Kaspersky software > Settings > Additional > Network > Limited traffic on metered connections > Untick.

Also if this has not fully fixed it and your not using a proxy server etc:

Kaspersky software > Settings > Additional > Network > Proxy server settings > Do not use proxy server > Untick > Save,
Userlevel 7
Badge +3
Hello mikolajek,

I collected more than a few contemporaneous posts and replies that were cross posted in two different topic threads at almost the same time. Please help prevent chaos. Please do not cross post same issue in multiple topic threads.
Userlevel 7
Badge +6
@mikolajek: it seems I have this feature because I'm Mod, but standard users don't have it...
Userlevel 7
Badge +2
Okay @mikolajek, now Kaspersky experts will now look at it and get back to you.
Thanks
Userlevel 1
No worries, @KarDip!

Here's my report: https://www.getsysteminfo.com/report/d4c1e4f4a6448952e1663a4f318f4058

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