Re: Wifi speed wild differences without any discernible reason
Without fixing the root cause of your poor circuit, the best router in the world will make no difference. You need to post all your power levels and network logs for comment. Also setup a "shared" BQM so we can see the latest data. At a quick glance your BQM is typical of an over subscribed area.
However, some users of the Hub 4 have reported using an additional cooling fan under the Hub 4 to blow additional cool air up through the Hub. For the sake of a few pounds it may be worth trying as well.
No idea where to find / what to hide when posting info - for power levels etc. Apologies - searched forum for a "how to" couldn't find any info on where to get this and what to not share (I've seen peel get told they've shared data they ought not).