I'm sure many people have complained about this, but I've searched and haven't found a response from SE about it. It seems even US players - which is the largest player base, I suppose -, have issues with latency due to the way the servers process the inputs. Now if we look at someone playing even farther from the server, like South America or Oceania, we have this:
https://www.youtube.com/watch?v=G5g4TM1fkCg
We take that to end-game content and it becomes unplayable (or hella frustrating, to the least).
Could someone please link me to a post where a SE staff member addresses this issue, if there's one?