I spent hours testing a bunch of different servers.. no joy. I actually had nice ping for about an hour.
It has been going bad off and on since then. Also had reports in the same game of people getting lag - from Aus and US east/central.
A buddy who knows his network stuff remoted in to my pc and concluded it is def the WG servers or a common hop in between... except we cant find the common hop. so probs the server?
Even with the lag going on, ping plotter didnt show any issues, nor did wireshark.