I've just replaced my ancient Cat 5e cable from a Virgin 3 Hub with a Cat 6 so I decided to test my speeds. Previously Ookla speedtest gave around 140 mb/s (it's a nominal 350mb/s connection). Now Ookla on line gives 250, the Ookla app 150 but various others much slower rates, including one (on an ISP switching site) that recorded only 12 mb/s. All the tests were done within a minute or two. I know results will vary, and much depends on the server they use, but it's hard to avoid the thought that the ridiculously slow results were faked in order to persuade me to change my ISP. Any thoughts?