I recently purchased a new desktop PC and a USB wireless adapter to connect to the wifi. When I turn it on, download speeds on all devices drop to about 0.5Mb. Turn it off, and my laptop (sitting next to the desktop for comparison) records 25Mb. Any ideas why this might be?
Hi Hayley. I concluded that the usb network adapter had to be causing the issue so have returned it. I've now purchased a powerline kit instead in order to connect the desktop by ethernet, so hopefully that will work when it arrives.