While most posts on here are issues of some type I have some good news for a change. After suffering consistent unreliability on my HG633 router for several years and having tried various alternatives without success, I have now just passed 20 days of uptime on my HG633 without any service drop outs and with a sustained connection speed that is good for my location. I am still on v2.00t of the firmware and there have been no changes to my home network configuration, but something has clearly changed - either in the Openreach or Talk Talk network. Whatever it is thank you - and please don't change anything!!
