The Realtime RTT graph doesn't

The Realtime RTT graph doesn’t accurately represent the Guild Wars 2 in-game ping in numbers or stability. Is there a way to find out the real ping?

You can inspect how network traffic goes on with tools like
WinMTR or
PingPlotter

RTT updating process may could be delayed depending
on how RTT calculation server is under load. That means it’s estimating,
not actual RTTs.

mudfish.net/docs/en/faq/nodes.html#how-do-i-get-the-updated-routing-paths.

So these behaviors occur showing different RTT values in Mudfish
dashboard and in-game measurement.