I am trying to solve the same issue with latency and packet loss for my friends as it seems random who can play official servers and who cannot, the ones who can connect fine but the ones who cannot only are able to play small game modes on official matchmaking or custom servers using the server browser (none of us have been able to host a server ourselves!).
I want to say one thing however, how do you know that it is connecting to Chile? I'm not that well versed in code development but PROD_DEFAULT-SANTIAGO-COMMON appears to be an internal code name for the live project (think like how mac os used to have animal names for different versions of osx and android were desert names). They are probably using Santiago and other city names as code for different versions and not where you connect to. I see this same text when I connect and can play on official servers fine.
What I will say is it matters more to my friend group the frequency of the server, 30hz servers can play any game mode fine for the most part. When the network monitor reports 60hz then only 2 of us can actually play without cause for concern however, if the rest of us want to join and it is a game bigger than 8v8 then those people will have decent ping/latency but the TN (timenudge) goes ballistic and they experience rubberbanding all over the place for no reason! There are some Portal servers which are also 60hz and this is also the case there. I am guessing theres some code that just gives up updating these players data, thinks it needs to implement a nudge to compensate and screws them over. This is a server issue and EA need to fix this!
