I started to have huge continuous lag spikes from the moment i log in till the log out, Usually from 500 to 1k ms. Sometimes even more.

I checked my internet few times works fine, Ping test all fine, other wow servers, all fine stable ms on 60 like my usual ms, even other games and everything works fine only when I log warmane it's not playable at all.

First it started on First od december after few days it was partly fixed and now few days ago it's back and not playable again.
I was playing past 2 days on mobile data internet 3G and it was somehow fine but sometimes it started lagging too and then not playable even on this internet.

Please anyone can help, I want to fix this so I can normally play again.