Huge difference in throughput between safe mode and normal

Solved
Giulee Posted messages 5 Registration date   Status Member Last intervention   -  
 Jonathan75010 -
Hello,

I have a relatively recent PC with Windows 8, I just switched to fiber from Orange for a theoretical speed of 200Mbps, but I consistently stay at 8.5 when I run the various tests throughout the day.

When I switch to Safe Mode I get 280Mbps down and 45 up *sic*

The technician tells me the issue comes from one or more programs on my PC. I’ve tried removing most of my programs, my games, etc... nothing works, I stay at 8.5. Moreover, I would still like to keep a few (aiming for 200Mbps but without too many programs, I don’t see the point ^^). I’m not sure about touching all the “little” things by the thousands (Nvidia or Microsoft in particular) that are on the uninstall programs page.

Does anyone have any idea what could be throttling my connection to this extent please? To keep it consistently at 8.5 (it never varies on this side, the test starts around 16/17 and always drops back to 8.5) I feel there must be a precise block, but before doing something stupid I’d rather ask.

Thanks in advance to those who can look into my problem. :o)

Configuration: Windows 8 / Firefox 27.0

12 answers

Giulee Posted messages 5 Registration date   Status Member Last intervention   5
 
Good evening to you!

First of all, sorry for not answering your questions this morning, but I had read all your replies just before leaving for work and I simply didn’t have time to develop my response at that moment. I hope you don’t hold it against me too much. :op

So I conducted all my tests over Ethernet; I didn’t think wireless could reach 200 Mbps, so I hadn’t actually mentioned it. Strangely enough, I was able to achieve a higher throughput on Wi-Fi than on Ethernet (around 40/40 Mbps).

As for the tests, I did them on the most well-known testing sites, namely Degrouptest and Speedtest.net. I also ran the test on my tablet with the Speedtest app, which gave me roughly the same results as my desktop over Wi-Fi.

To get back to my issue, I followed your advice and ran a thorough antivirus scan before leaving for work; it came back negative, so I ruled out that hypothesis first.

Next, I went into msconfig to disable everything in the “Startup” tab of the Task Manager, which didn’t help either.

Still in msconfig, I disabled all services to better focus on the issue. I recovered a 200 Mbps throughput by leaving only the Microsoft-related services, which helped narrow down the suspects. :op

I re-enabled all the services related to manufacturers step by step, and I was able to pinpoint the culprit, which is none other than ...

Qualcomm Atheros Killer Service V2!

… So if someone asks me what it is, I wouldn’t be able to answer, but it seems to be related to my Wi-Fi card.

Anyway, once this service is disabled, I go from 8.5 Mbps to 214 Mbps without issue, which will let me resume all the Steam games I deleted for nothing in no time. ?

Thanks again for your help and have a good evening! :o)
5
Jonathan75010
 
I’m digging up the topic a bit, but I also have my line currently capped. Having an MSI GE60 with Qualcomm Atheros Killer Service running in the background, I, like you, stopped that service.

After disabling Qualcomm in my Task Manager, I went from 89 Mb/s to 489 Mb/s!!!

You saved me some head-scratching this time, and I thank you!
5
ThEBiShOp Posted messages 9307 Registration date   Status Contributor Last intervention   1 605
 
Hi,

the problem isn’t so much the programs installed on your computer as the programs running on your computer.

The best thing to do is to open the processes and clean house there.

Maybe you have malware or a virus, consider checking the virus/security section of the forum, that’ll be a good start.
1
Giulee Posted messages 5 Registration date   Status Member Last intervention   5
 
Okay I see what you mean, but how do I know what I can remove or not in the processes then? If I remove something important isn't there any particular risk? (other than a crash/restart I mean, which in itself wouldn't be very serious)

I’ll look into a full analysis of the PC after work tonight anyway to make sure it isn’t a virus first and foremost, thanks for your advice. ;o)
0
ThEBiShOp Posted messages 9307 Registration date   Status Contributor Last intervention   1 605
 
No, you risk nothing, follow Kaumune's advice below, it is wise.
0
kaumune Posted messages 22603 Registration date   Status Contributor Last intervention   5 157
 
Hi

First, we should look at:

How are you connected to your box?

How and with what do you run your speed tests?

Then you can disable the programs that launch at startup and enable them one by one to see which one causes the problem

Windows key + R, in the box that opens type msconfig and click OK

Startup tab Open Task Manager , again Startup

You can enable/disable, one by one, the startup programs
6
Anonymous user
 
It’s an useless comment but consider yourself lucky to have a high connection ;)
Me personally I’m running at 6 Mbit/s ^^
0
Giulee Posted messages 5 Registration date   Status Member Last intervention   5
 
This is not really the issue, you too go faster than a 56k so you have no reason to complain if we go there. :op
However imagine that instead of the 6Mbps speed you might hope for you were really on 56k? That’s a bit my problem. :o)
0
Mekthoub Posted messages 4136 Status Contributor 1 241
 
Hi!

Well yes: It’s not about killing programs on your PC, neither a game nor anything else... These programs have no effect on your bandwidth, at least not until they’re launched. It’s about killing a resident program on your PC... A resident program is a program that runs continuously, from the computer’s startup (in normal mode) to its shutdown. Most often, the culprit is security software: Antivirus, or firewall, or security suite. But it can also be downloading software, like µTorrent which has an automatic continuous operating mode as a resident app. Not by default, but you only need to have touched the thing you shouldn’t in its settings...

On a modern computer, I’ve never seen resident software capable of throttling so much! I’m curious to know the culprit...
0
Giulee Posted messages 5 Registration date   Status Member Last intervention   5
 
Thank you for all your advice, I’ll test that tonight, I’ll keep you posted on the results (with the name of the culprit if I manage to put my finger on it ^^) !
0
kaumune Posted messages 22603 Registration date   Status Contributor Last intervention   5 157
 
And incidentally, you answer the questions asked ..
0
Anonymous user
 
I think we’ll need to tinker with RegEdit.
0
ThEBiShOp Posted messages 9307 Registration date   Status Contributor Last intervention   1 605
 
Not really, no...
0
kaumune Posted messages 22603 Registration date   Status Contributor Last intervention   5 157
 
Thank you for the feedback

See you later
0