Unresponsive bug

[ddnquang]

As mentioned on my first post, this only happens to 1 character on my account. Never had this problem with any other characters no matter how long I played on them. Even if my ping is over 2k, I'm still able to click on my HP/MP potions, it's just that my hp doesn't heal right away but on this character I'm not able to click on these at all (no cooldown animation, nothing happen). On most of those videos, my ping was mostly 200-600ms. I've spent months on these characters, it can't be just coincident that every time I play on this character, my internet is not good