my PC slows down when I am looking at multiple web pages.
I'm using google chrome. A few weeks ago, my BT modem crashed, so I re-booted it.
Since then, when I've had the PC switched on for an hour or more, and when I've got a few different web pages, the whole PC slows down. I re-booted the modem again and it cured it for a while, but after a while slowed down again.
I have run avast and malwarebytes a few times each, I have no virus or malware.
Any advice would be appreciated. The PC isn't new but isn't that old either, the spec should be fine, it has been fast enough for a long while now.