You might be further away from the BT telephone exchange in your new house and this will effect your download speed.
Your modem router says you are connected at 7200kbps 448kbps, but you are down at 500kbps download and 100kbps upload. May be you are being traffic managed for downloading to much, see
Legal Stuff towards bottom of the page read: `Acceptable Use Policy' and `Subscriber Traffic Management Policy'.
Re online gaming: Turning Fastpath on will help, read the following thread from Overclockers forum
http://forums.overclockers.co.uk/sho...php?t=18042643. It will involve talking to Virgin Media, so brush up on your English or you make the initial phone call, go through the security checks and then you can pass the phone onto a friend so they can ask for you.