What speed does www.samknows.com/realspeed show to the Hub?
Are you using a direct to the Hub wired connection for speed testing? What device are you using for testing?
Post your power levels and network log. Also setup a BQM here www.thinkbroadband.com/ping
Once done we can comment.
I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more
Have I helped? Click Mark as Helpful Answer or use Kudos to say thanks