This happened to me 4 times , 2 times while killing in Eternal battleground boss named " grub" ( twice the same time at low HP ) and 2 times in other places , both in world vs world worlds , so thing is you just play and than from nowhere this noise appears and all game sound are gone and all u can hear is sound like " booom (silence) booom (silence) boooom " you have to restart the whole game otherwise sound won’t dissapear , i tried reset sound in game change settings but it’s not working , maybe for some people it’s not a big deal but when you are in eternal battleground to restart the game means = lots of waiting and even if you do this bug will still appear
I asked in game folks and some whispered me that they have same bug as me so it’s not only my pc or sound problem
thanks