True.

Paul

The underlying jitter is around where I would sort of expect it, issue is you have those spikes happening throughout the night and while usage in areas is up across the board people are still going to bed as the general jitter (yellow) trend shows.

Maybe a fault on line or in area, presume you've given the router a reboot?

In reply to a post by MrSaffron:

... presume you've given the router a reboot?

I suggest powering it off for a couple of minutes, rather than a warm reboot . Let the hardware have a breath, not just the software, buffers etc.