Please keep in mind that the in game latency meter is not a measure of network latency but a measure of game latency. This latency check measures many things from the client to server and is processed by the server code itself not by the network stack on the server.
I keep spiking ever since the maintenance in the late afternoon...
I'll post a tracert ina few, but I practically can't play the game anymore.
While high network latency can negatively impact your play experience, a high in game latency measure is not necessarily indicative of a network issue.