Over the last few weeks I have been having problems with my WIFI speed. I have contacted TalkTalk on a number of occasions and each time tests are run and I am advised that there is nothing wrong. It all started following a power cut. Before the power cut I had no issues with the WIFI speed. If I connect my computer by cable to the router the speeds are fine, it is only if I try and use WIFI. Today the wifi signal has been very intermittent. I have tried running the broadband speed test but it was unable to pickup the WIFI signal. 2 minutes later and it was showing 67.4 mbs. A short time later on my iPad and I was having to wait for web pages to load. I again tried the speed test and it couldn't run just said try again. I am having the same problems on my iPhone as well.
The actual setup in the home has not changed. The router is not near any wifi devices it is raised above any furniture and facing towards the other rooms in the house.
As also have a Talktalk wifi extender in the lounge that I connect my TV box to and the tv works fine.
I am sure that it is a problem with the router hub because before the power cut there were no problems.
The files I have attached are form a couple of weeks ago