Extremely slow download speed

[DIXIE NORMUS]

Hello
I'm having a problem with my download speed...
I only download with around 200 KBYTE/s on Steam, even though I have a 100 MBIT/s (Around 12 MBYTE/S) internet....
This problem occured about 3 or 4 weeks ago, and it annoys the crap out of me...
I've read the steam guide about it, did what it says and it didn't help...
I also contaced Steam Support, but they only sent the guide like 4 times I've already read, and then closed the thread saying that they can't help with networking issues, even though I only have this problem with steam, downloads on every other platform are going fine...
I'm connected to my router with a cable.
My router is a modem-router hybrid, or idk how to call it, the type is ZTE Speedport Entry 2i.
I read dozens of sites and threads about this, but I couldn't find a solution, so I've decided to open a discussion here, since I'm out of options..
What I tried to fix this issue:
-Disabling Windows Firewall (I don't have any anti-virus software)
-Restarting Router
-Deleting Download Cache
-Changing download region
-Resetting Steam (I basically deleted everything from the Steam folder except steamapps and Steam.exe then ran Steam.exe. I don't want to reinstall Steam completely, since it would delete all my games installed, and if the issue still persist after the reinstall, it would take ages to redownload them)
-Opening ports in my router (I don't think this is the source of the problem since I didn't have this issue before, and ports weren't open for steam in my router 2 months ago, and everything still went fine)

Please spare me from the "Are you sure you have a 100 Mb/s internet" and such comments, YES I AM SURE, but in case you don't believe me, here you go...
https://www.speedtest.net/result/8149500857

Any help would be greatly appreciated,
Thanks.

[AverageWarFan]

Try running a diagnostics test, it might be able to figure out what is wrong.

[Sr. Xyz]

Try this:
(may seem strange, but it worked for some users.)
Open your main browser (the one that opens when you click a link), go to settings and disable auto-detect proxy settings.

[mbmt]

I to have tried everything like you, funny how the store loads super fast and discussions forums are fast to load, but Downloads are pathetic.
I’ve been told over and over how we have no proof something is being throttled down, but sure is suspicious.
Like you I'm just looking for an answer

[DIXIE NORMUS]

Sr. Xyz님이 먼저 게시:

Try this:
(may seem strange, but it worked for some users.)
Open your main browser (the one that opens when you click a link), go to settings and disable auto-detect proxy settings.

I can't really find this option.. I'm using opera
EDIT: Found it, didn't help

[Sr. Xyz]

Piszkos Fred님이 먼저 게시:

Sr. Xyz님이 먼저 게시:

Try this:
(may seem strange, but it worked for some users.)
Open your main browser (the one that opens when you click a link), go to settings and disable auto-detect proxy settings.

I can't really find this option.. I'm using opera

Ok. I'm translating these from portuguese, some items may be different:
Open Windows "Internet Options", "Connection" folder, click in "LAN configurations" and uncheck "auto-detect configurations".

[B-o-B]

Check these if you haven't
Tried creating a new Library folder and installed to that?
https://support.steampowered.com/kb_article.php?ref=7418-YUBN-8129

Have you checked if any software you have installed interferes with Steam?
Programs Which May Interfere with Steam
https://support.steampowered.com/kb_article.php?ref=9828-SFLZ-9289

Diagnose and report network problems?
https://support.steampowered.com/kb_article.php?ref=8861-QOHN-2234

[DIXIE NORMUS]

b☣bz님이 먼저 게시:

Check these if you haven't
Tried creating a new Library folder and installed to that?
https://support.steampowered.com/kb_article.php?ref=7418-YUBN-8129

Have you checked if any software you have installed interferes with Steam?
Programs Which May Interfere with Steam
https://support.steampowered.com/kb_article.php?ref=9828-SFLZ-9289

Diagnose and report network problems?
https://support.steampowered.com/kb_article.php?ref=8861-QOHN-2234

I have 2 folders, one on C: drive and one on D: drive, both of them are slow-
I don't have anything that could interfere with Steam, maybe BitTorrent but closing that didn't help either.
I don't have network problems, i'm not lagging in online games, only my downloads are slow and only on steam, and even steam downloads were fine like a month ago. I didn't change anything in my network settings, except opening a few ports, but that shouldn't interfere with Steam AFAIK.

[DIXIE NORMUS]

So I have read through a few discussions here on Steam, and it seems like lot of people have the same problem, Valve really needs to do something about this...

[DIXIE NORMUS]

Did anyone find a fix for this? It still persist for me...
https://www.speedtest.net/result/8168521822

[DIXIE NORMUS]

Almost 2 weeks passed, still nothing.

[Forcen]

What are you downloading? Same things usually or new stuff every now and then?

Here are two things you can and see what happens, it be very informative but but it can be cumbersome to do:

1: Try another computer on the same internet connection. If you or a family member has another PC that you normally don't use Steam on then this is easy, if not a friend with a laptop could also help you test this.

2: Try the same computer with another internet connection. This is real easy if you are using a laptop, just bring it to a friends house. Even if you don't use a laptop for gaming you could bring one to a friends house IF you have a laptop and it was still slow in test 1.
You could even use your 3G connection on your phone for this (if it supports speeds above 100kb/s), you could try to download something small if you have very limited data like Codename Gordon which is only 38 MB: steam://install/92

Try doing both of these if you can and see if anything changes, this is very helpful for ruling out either your connection or your PC as the cause of the problem.

Another thing to test, what is your speed in safe mode with networking? https://www.howtogeek.com/107511/how-to-boot-into-safe-mode-on-windows-8-the-easy-way/

[DIXIE NORMUS]

Okay, so I've tried another internet network (My mobile data), and the download speed was fine. So it's my router that is probably blocking something, since everything else is going fine, torrent downloads, Origin downloads, etc., speedtest is fine too
https://www.speedtest.net/result/8190089969
But what could block only steam? I didn't have such problems 1 or 2 months ago, and I didn't change anything in my router except opening a few ports.

[Forcen]

It could be your router but we don't know for sure yet, we can only suspect that it's probably not your PC or at least not just your PC. It could very well be your ISP also or a combination of your PC and router.

So you did test 2 right? You should really try test 1 if you can just to really pinpoint the issue. If another PC that you never use have the same exact issue then you can be extra sure that your PC is not causing this in some way.
Again, the safe mode test can also be good for confirming that it still won't work.

Another really helpful thing to test is to try another router, ask a friend if he can bring his router (that he knows works fine with Steam) to your house but you said you have a combined router/modem?
You can't set it to do only modem and shut down all routing stuff and use an external router?

[DIXIE NORMUS]

I can't try it with another PC but I've tried the safe mode method, and it was still slow.
Yes, I have ZTE Speedport Entry 2i.
Another router isn't available either :/
I guess I could set it to do only modem, but only in the night, I don't want to screw with my family because of this.

[Forcen]

If you try modem only then be sure to back up the settings and only do it for a real short while. A small proper router after the modem might be what you need.

Maybe you didn't port forward the correct way, i found a forum thread that might help: https://www.tenforums.com/network-sharing/107742-having-trouble-port-forwarding.html

At some point it might be best to call support for your ISP since I assume you got the router from them, they should be the one who looks into this.