Hi @stuartross3, thanks a lot for your patience.
Apologies for the delay, but we've spent some time trying to investigate what's causing the issues for you and unfortunately, there is absolutely nothing from our side that is causing these spikes.
I'd recommend running a Traceroute a see where the latency is coming from, whether or not it is definitely us or your home.Restrict all background applications that can take up bandwidth - iCloud, Google Drive, Windows updates etc.
Other than this I'd recommend ensuring all of your drivers are definitely up to date.
Finally, if you do have a third party router (you may wish to consider getting one if not), please ensure your DNS is set to 8888/8844.
I hope this helps.