That looks very much like over-utilisation, which has become far more common over the past six months across VM's network.
Unless VM can confirm that there is either upgrade investment in progress (or budgeted and scheduled), or that there's a traffic routing solution that is feasible and going to be implemented, then it will stay like this for months (sometimes even years). VM cause the problem by over-selling connections relative to available local capacity, but usually the costs to increase capacity are too high to offer VM any return on investment (so they don't bother).
Don't rely on a fault reference or a fix date - a fault reference means VM know there's a problem, but doesn't mean anything tangible will be done, and fix dates for over utilisation have a bad habit of drifting forward as soon as they become imminent.
As a Very Insightful Person, I'm here to share my knowledge. I don't work for Virgin Media.