Ideas please ?

I attended a broadband fault yesterday, 'slow speeds' all looked good with the set up, the line testing OK, signal all looking healthy, just over 12 meg .......... No errors, all good.

Cheap and dirty speed tests to my mobile all fine ....THEN I asked the punter to demonstrate the issue as I saw nothing wrong ....... Shortly after the net ground to a halt, ping times up from 20ms to over 1600ms pages failing to open, borked.

After some mucking around localised the problem to his 'main' PC newish looking Windows 10 machine, as soon as was connected to the router (via wireless) it all ground to a halt .... Customer seemed to think this may have started after a recent Windows update ........

Said I'd post on here so the punter could look at suggested answers.

Any help gratefully received. Thanks.

Bad Wi-Fi driver?

How is it on wired?

TBH, I would try new drivers from the manufacture or try older drivers that is currently installed.

Could also be his Wi-Fi device clashing with other hardware on the motherboard, those PCIe share other slots, so you need to make sure the cards you insert doesn't share them, you can look this up in the motherboard manual.

Paul

Did you have a look in Task Manager to see if there were any runaway processes or network activity on the Win 10 machine?

Was the IP address fixed or through DHCP? Was the IP address unique or did it clash with another device?
Did you run a virus scan?

Check Windows Update on machine for recently installed updates and dates

If necessary, uninstall one by one, starting with optional updates

Important updates should be ok or there would be many complaints

Windows 10 PC doing a large cloud backup and saturating upload (check Task Manager network performance tab for activity) e.g. syncing photo folders

Nope, usual residential offering. Hub5.

I suggested the punter ought to update and run a full anti-virus, but obviously not within my remit to do.

Have just read Mr.S's theory, and that kinda hangs with my guess too, something saturating the upload.

OK, that hangs with my hunch .... would it really mullah it for as long as two + weeks ?

He checked whilst I was there and said nothing untoward showing.

It sucked on wired too.