My latency increase strangely

I play Warmane with 399ms normally. Yep, till today when i went to Booty Bay and got killed buy orc, i turned to soul then i was disconnected from server. I thought it just normal. After 15 minutes i log back to my character, my loading time increase for a while, i don't care about it but when i play OMFG my ping increase to 210 to 310 and then 1020, 5124 (maxium). It increase by minute i can't do anything, i deleted my BitDefender AV but it doesn't change situation...
I'm using Window 10 64bit