Your BQM is showing either, a lot of noise on the line, or over utilisation. A new Router will not cure any of those faults.
Post the power levels, Pre and PostRS errors and network log from the Hub. 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