Aion Riftshade

i get extremly many lags since snowflake event started that it´s pretty much unplayable after half an hour at best from 1 min i have mostly 10-20 sec without problems at best and i don´t have issues with any other game and most games take much more resources from my pc and i tried everything that could come to mind i reinstalled it a few times i restarded client and pc i tried with vpn and without vpn and much more