Hey there are you playing on xbox 360, playstation 3, xbox one, or playstation 4? It's important to know because the newer systems (xbox one and ps4) require a higher speed connection for obvious and questionable reasons.
76.23 mb/s is fast enough, a lot faster than you need. If your router is having trouble with signal or maybe packet loss could be happening over wireless that could really slow down your connection a lot. Do you play by wireless or wired? I would recommend if you play wireless try directly connecting your console to your router and see if that improves connection.
And again someone else already mentioned this, but if there isn't enough people playing in Taiwan then matchmaking will find players in other countries, and this can be a huge problem because there isn't much you can do if there aren't enough players in your country to create game lobbies. Even the fastest connection cannot handle long distances.
Sorry for the long post hope this helps. I know the frustration I have had problems with lag and I know a lot of people in the military that move to other countries and experience the same thing.