Lag spike at boss battle at poh24 and mm24

[GespentJaeger]

I'm having a lag spike to the point that my character is not attacking the boss. Even I'm clicking left buttom and skill button. My highest latency at resource monitor during that time is somewhere 300ms even that is my normal ping playing. This issue happen at the start of March. Do note my setting is already low and before a boss battle happen there is no delay on combat

[GespentJaeger]

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[894535_1452550603]

Uninstall and Reinstall the game.  It helped me and a few others I know fix the lag spike freezes at bosses that started in late Feb.