GM's can get wrong, like they did here: https://gyazo.com/50984c8611f7d27785b8669117bda42d cuz atm is not working like that, everyone said in pandawow forum that gargole dmg was not snapshot.. but this gm says it is.
Here, i asked for haste benefits for dk: http://forum.pandawow.ru/showthread.php?t=160893
About GM answer: he got wrong saying that haste make DK DOT ticks faster: http://prnt.sc/9x6i0q , but he was right about ghould attack speed and energy regen, its a pitty that nothing from haste work for ghoul in pandawow.