PC issues with some websites, but another PC on the same network is fine?

Middle of last week, my work desktop started having issues in the morning.  I usually fire up Youtube Music to listen to during the day, and it kept hanging up on the site.  Trying to reload sometimes it got partially loaded and stopped, and if it did load, the music kept pausing and I got the spinny circle on the song.

Then certain websites would either not load at all, or go partially and freeze.  Other websites were fine.

It's been like that for a week now.  I realized I was very low on storage (like 5gb out of 250gb) so I freed up about 50GB of stuff I really didn't need.  I've been using a current Firefox and tried Chrome just in case, same issues.

I just tried GRCorollaforum.com and it freezes like this:

Other sites are doing the same like my Star Wars event forum, a few GR vendors.  But still other sites are fine, this one always loads.  Google, Reddit, Gmail, a few others, all good.

I just tried the shipping computer across the room and even that slow ass thing loaded the GRC forum no issues, I was able to read a few posts...

So that narrows it down to this PC.  It's a few years old, fairly robust with an SSD drive and decent video card.  We have some local Fiber Optic, I think whatever Cincinnati Bell turned into.  I was hoping the storage was the issue, this just started recently.

I'm pretty computer savy, first was a Vic-20 in the mid 80s, I've built PCs.  So lay it on me, where do I look?  Unless the builtin wireless is losing it.  Would that explain only certain websites having trouble loading?

"Work desktop" is this managed by a company IT team? I've throttled work stuff and streaming non-work stuff differently when there are bandwidth constraints. 

In reply to Mike (Forum Supporter) :

We have someone that we apparently pay monthly whether he does anything or not, and tends to break something for every thing he fixes, but no.  No IT management.  Small company, like 5-6 employees total.  Individual PCs on a wireless network and a Dell server that's mostly for allowing us to access a shared folder.  They/he don't/doesn't give a E36 M3 what we're looking at as long as work gets done.

Super weird...try pinging (open command prompt, enter ping grcorollaforum.com for example) some of the sites that don't work from the computer that's giving trouble, and try the same thing on the computer where it does work (some sites don't respond to pings). Any difference?

Windows just pushed an update that made the internet on my Win10 PC in my shop stop functioning.

I'm uninstalling the update right now.

My suspicion is that the non-working PC is being proxied by a security product.  Try going to https://whatismyipaddress.com/ on both computers and see if you get the same address or not. 

ShawnG said:

Windows just pushed an update that made the internet on my Win10 PC in my shop stop functioning.

I'm uninstalling the update right now.

I'm noticing that on my home computer.  It's really bad.  And I also have noticed that copilot is always running, which can't be helping at all- that's just software I don't want or need.  But you can't take it off.  

Maybe I finally pull the apple trigger this time.

BTW, W10 is being stopped for support in just under a year.  So I expect performance to drop off a lot over the next 11 months to force people to get new computers.  I know my computer can't be updated.

This should be illegal, as it's a total waste- buy something that should be durable only to have someone decide that I have to get something new.  

red_stapler said:

My suspicion is that the non-working PC is being proxied by a security product.  Try going to https://whatismyipaddress.com/ on both computers and see if you get the same address or not. 

I checked mine and the shipping computer.  Got the same IPv4 address for both, but on my computer the page never finished loading.  The other one it finished and there were lots of information below this, text and blocks of stuff.  (IPv6 never stopped saying "checking..." on mine, on the other it said not detected or something.)