We're sorry to hear you had an unpleasant experience with lag. :(

It may in fact be some kind of bug or other issue that is causing this. You could open a bug report at the link below after logging in and opening a ticket. Add all the information you can, and add your log files (.clog if you can) to the report so we can analyze whether this is caused by servers, or some other issue!

https://community.gaijin.net/issues/p/enlisted

Though, regarding a possible Latin America server - we can never say never! This may be something considered as the player base grows with our Steam release. :)