Is there any way to get a faster connection in South America?

If you are on wireless -> try switching to direct connection. That should reduce the game from having lag spikes.

If you are on regular broadband --> try to see if you can upgrade to fiber optics. Or find a store/location that allow you to play with fiber optics. For me, this improve my experience playing people from the east coast to the west coast of United States (I live right in the middle).

If you are playing against people with 1-3 bar connections -> try playing against 4 bar connections only. While not always accurate to the actual connection, there is quite a difference, but you may be comfortable with 3 bar connections.

The only problem with limiting who you play by connection, is that you limit the number of people you can actually play with. I am not sure of who in South America plays the game and if there is a regular group that meets up online to play.

Unfortunately, outside of Japan, hopping online and hoping you will quickly get good connection matches to others might not be practical. My suggestion: When you do get to play someone that you have a good connection to, message them and see if they want to play together online more.

 

@Victor_ Not sure if you are aware of this, or already participating in it:

GrayFoxRJ is running a beginner's league the Poro Cup for the South America region.