Hi Lucygooner, Apologies for the delay in getting an update on the fault ticket for you. We seem to have had the results back from the suppliers fault testing and they couldn't identify an issue so have asked us to check back with you. I've updated the ticket for you if you can drop us a reply and we can pass the fault back to them if you're still seeing speed problems.
UPDATE Hi Lucy, I've just noticed that your RADIUS logs have an interesting theme which could well have led to your speed problems. It looks like you may be turning your router off at set times in the day for long periods. Unfortunately this has been picked up by the exchange equipment as a possible fault which has lead to you being banded at the speed you're seeing. The router is designed to be left turned on and connected at all times so this is why there has been a problem with this being turned off. Could you possibly leave this turned on and connected moving forward and we can take a look at getting the banding removed to bring the speeds up for you.