Not great at all, cable generally has a little more jitter but should hopefully be a steady blue area, but as your blue is showing a fair bit of variation this supports your moan about actual gaming.
The graph assuming you were not using the connection all those hours is a reflection of the activity of others in your local segment of the cable network.
Gaming does not need 100 Mbps, should be happy with 5 Mbps so long as latency is reasonably low and consistent. What the 100 Mbps should mean is that digital purchases and game updates download a lot quicker.
Hi Andrew, and thank you for your help. Yes, I'm not at home most of the day, so the connection is definitely not being used. Although, having said that, I do have a Tivo, my TV, a couple of Now TV boxes and a NAS device connected, its possible they were doing something, but they would really have been idle.
I suppose I could turn off these devices and see how things go. Failing which, is there something I can raise with Virgin about the performance issues I am experiencing? Would they take this graph as evidence of some problems with my connection?