I've been having issues with this for a while now despite talking to my isp and having them run line checks and so on. The issue is the same on all devices connected to the router (tried multiple routers too) and different OS.
Here is a picture of a tracert loop to google.com, as you can see every 30 seconds to a minute there is a huge lag spike and sometimes it disconnects instead of this spike.http://img839.imageshack.us/img839/2458/pingfluctuation.png
This is driving me nuts, any help would be greatly appreciated.
Thanks for reading.