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.