Thank you all for your patience regarding the ongoing lag issues occurred on the World Boss. We are happy to announce that proper optimizations have been made and that you shouldn't experience any lag from now on.
Nothing has been lost - every attack that you have inflicted during the lag periods has been recorded and the score was added to your total. The duplicate scores have also been removed. The Scores are now updated once every 2 minutes, without causing any interruption to the game.

We apologize once again for any inconveniences that these problems may have caused.