I know many topics have been made about this, I am just adding this here for further documentation. I am in East Coast Ohio, being placed in Chile servers SAC1. 200 ping, lots of spanish speakers, insulting me when I ask questions in English. Completely unplayable. I’m unable to run any winmtr tests but I’m hoping enough people do that Blizz can fix this.
I am in Philadelphia PA and connected to SAEL server, which seems to be in Argentina. SAC1 server is in Puerto Rico. The top left 4 letter code when you use ctrl-shift-n corresponding to airport code, you can look it up in google.
Connected to Chile too, from Puerto Rico?! Ufffff. 
Hey all,
We have a few different threads for these issues. Can you please post in the one for your area?
Canada
United States
Puerto Rico
If you are having this problem in a different region, please post your own thread with the country you are having problems from.