PTR high latency, where are PTR servers located

Hello.
I wanted to test some things on PTR server (tierset and double legendaries for 9.2), so I created a PTR account.
When I downloaded PTR client and logged in to one of the servers I experienced very high latency, around 160-200ms. Such high latency makes it impossible to test anything.
My normal latency on live servers is around 25ms. I am located in Poland and I play on EU servers.
Here is my question: did I connect to wrong PTR server? I asked in game, and one person told me it was NA server. In game I see 5 PTR servers: Nobundo, Broxigar, Lycanthoth, Anasterian, Benedictus. I tested all of them, I have 160+ ping on all of them.
Are those NA servers? How can I connect to EU PTR servers?

PTR servers are generally located in the US, as they often need to be directly monitored by development, QA and engineering teams (which are largely based in our company HQ). :slight_smile: