Windows 10: Download speed plummeted for no reason (not a router problem)

So recently i just turned my computer on, and tried to download a 200Mb (megabytes, not megabits) file. I realised that from the usual 8-9Mbps, i was only getting 200Kbps (kilobytes).
It doesn't seem to be a problem with my router since downloading on my phone and everywhere else is completely fine.
What could've happened and how would i fix this?

(i have the latest windows 10 as of today but this has nothing to do with a windows update)

- - - Updated - - -

And also, Steam (popular game market) can download my games at full speed and somehow even Discord (chatting and calling app) works fine even with it using a lot of network.

:)

 

Connectivity Problems - Random, sudden plummets in download speed.

For two days I'm having problems with my internet speed. I have a high internet speed (usually around 45) using WiFi and I've been experiencing sudden plummets in it that only last less than a second. This is horrible when gaming because it causes my game
to jitter and it is heavily annoying.

Here is what I am talking about:

http://i.imgur.com/nFr3N4n.png

Also pinging www.google.com shows that every few seconds my ping skyrockets and then goes back to normal:

http://i.imgur.com/M9vgrjM.png

I've tried to recover my PC and also reinstall drivers but nothing has worked. I don't know if it's a problem with Windows or if it's a problem with my router, so I'm posting it here.

 

Slow Download Speed

Hi,

Thank you for posting your query in Microsoft forums.

• I would suggest you to test the speed using any of the speed test website or app to confirm the upload and download speed.
• I also suggest you to reset the wireless router to check if that helps.
  
• You may plug in the Ethernet cable if available and check the speed.
  

Hope the information is helpful. Feel free to write to us for any other assistance with Windows, we’ll be glad to assist you

 

Browsing speed is fast, but download speed is 0

I'm currently using Windows 10 and netcomm nb604n router.

Problem:
Web browsing on chrome/edge/firefox works fast, but my download speed from majority of websites start around 10kb/s and eventually (in a few minutes) decrease to 0kb/s.

Here are some example files that does this:
https://atlas.hashicorp.com/laravel/boxes/homestead/versions/1.0.1/providers/virtualbox.box
Git for Windows (there is a download button)

When I am downloading from utorrent, or when I installed the Unity engine through Unity's installer, my download speed was fine.

Things that I have tried:

1. Running the test on speedtest.net. It says that my download speed is 18MB/s and upload speed is 1Mb/s. Of course this doesn't demonstrate the actual speed that I'll get when downloading/uploading from a server, but my ISP is using this to say that there is no problem on their side.
   
2. Taking my router, filter, and all cables to another house and downloading the same files that I couldn't download. This worked perfectly fine, so I'm guessing that my equipment is not the issue.
   
3. Using both wireless and LAN on a brand new computer and an old laptop. The problem exists in all cases.
   
4. Resetting and restarting the router. Did not do anything.
   
5. Changing the mtu settings as suggested on Windows 7, download speeds drop to 0 kb/s and the download has to be restarted
   Unfortunately this didn't solve my issue.
   
6. Calling my ISP to make sure that they weren't throttling my network. They are denying any fault on their end, and are claiming that there is something wrong with my computer or my router but refusing to provide a solution.
   

If anyone has any suggestions or ideas on what I could try to resolve this issue, please let me know!