Where are UNET relay servers located ?

Where are UNET relay servers located ? most important, is there one in Brasil ?

If not, how much it would affect my game performance having to connect through a relay server in other country?

Thanks.

 

There's 3 at the moment (U.S., Europe, and Asia), and you can connect to them specifically if you want:
https://docs.unity3d.com/ScriptReference/Networking.NetworkManager-matchHost.html

From my experiences so far, all the relay servers introduce a really high level of latency, even with players in the same country. It is slower for me to play with another player (both in the U.S.) through a U.S. Unet relay server, than it is for me to play from U.S. to Germany over direct IP. I have a simple top-down bomberman-style game, and I can't imagine the performance working out for *any* other real time game with much more data and accuracy (FPS). I don't know what to do about it.