Download Problems after reinstalling Windows

Hardware/Software:

FRITZ!WLAN USB Stick AC 860 (Latest driver)
Windows 10 Pro 1909

Problem:

So the problem im facing is that when i try to downloads something it randomly stops downloading (the problem didn't occurred with Steam for some odd reason).

I never had this problem before but after i reseted my PC (which i usually do every 3 months) i started to experience this problem.

Solutions i tried:

All downloads fail regardless of browser!
answers.microsoft.com
Downloads fail windows 10
I installed windows 10 about 4 days ago. See a lot of times when downloads fail and have to be restarted. This happens in firefox, and edge. This is not an internet issue, but possibly software issue.
answers.microsoft.com
https://kb.mozillazine.org/Unable_to...download_files

- Installing the newest Driver for my WiFi Stick

- Installing the newest Windows Updates

- Installing the newest drivers for my Hardware (CPU, GPU , etc.)

- I also reinstalled Windows 10 5 times (3 times Windows 10 1909, 2 times Windows 10 2004)

- Reseted my WiFi Router

- Tried 3 different Browsers (Firefox, Edge, Chrome)

- Deactivate Power Saving for my WiFi Stick

- Checked for USB connectivity issues

Images of Failed Downloads:

Chrome - Google Drive: Sign-in
Firefox - Google Drive: Sign-in
Edge - Google Drive: Sign-in
(Edge and Chrome just get stuck instead of saying that the download failed)

At the end nothing worked i hope somebody can help me out i would really appreciate it.


NOTE: Uploading works fine and on my Phone everything works fine as well so its only a PC problem!

Thanks for the quick response!
I usually have MalwareBytes installed but like i said i reinstalled Windows 10 a lot of times means i don't have it installed rn (The only things i have installed are my drivers and those 3 Browsers and have the Win10 version 1909). Also this problem happens with every browsers and some programs
for example Discord. something seems to keep blocking it?

UPDATE
So it seems like its maybe my wifi usb stick?

If it's a new installation by default it may be set to only install software from ms store check that isn't set

I did a clean install but it 100% isn't the problem since i have a usb stick with fresh drivers for everything and install windows10 without having internet on. Also i use the software ShutUpWin10 to deactivate most of the auto updates (never caused problems before so im sure that this is not causing the problem). Also i just ordered a pcie wifi card. (Asus PCE-AC88) If this works just fine im not gonna bother with a usb wifi stick anymore!