Can't update, stuck downloading. High CPU use when closed.

Check version

• I'm running the latest version of Path of Building and I've verified this by checking the changelog

Check for duplicates

• I've checked for duplicate open and closed issues by using the search function of the issue tracker

What platform are you running Path of Building on?

Windows

How is Path of Building expected to behave?

When I open PoB it should update, and when I close the application it should completely stop.
Both of these fail.

How does Path of Building behave?

When I open PoB the download starts and it always gets stuck after a couple of files sometimes "Downloading 1/60", sometimes "Downloading 8/60", etc.
When I close the app it stays open in the background consuming 15% of my CPU and I have to end the task manually through my Task Manager.

Every time I open and close PoB a new instance of the app remains open on the background consuming another 15% CPU adding up each time and eventually slowing my computer to a crawl.
(This has been happening for years and I've always had to uninstall and manually install every new update)

It happens on both the regular version and the portable version.
Added exceptions on the firewall and my antivirus (Malwarebytes), still no luck.

How to reproduce the issue

1. Open PoB
2. Wait until it tries to download the update
3. Close PoB
4. Repeat...

Character build code

No response

Screenshots

Start by reproducing the Windows updater and shutdown behavior using the listed steps, checking both regular and portable versions. Investigate why downloads stop partway through and why closed instances continue using CPU. Done means updates complete and closing Path of Building leaves no background process.