Sekhemas Game crashes when Zarokh appears

So i usually like to run Trial of the Sekhemas quiet frequently because, yeah, i just like to do it. So every run i ask my guild if someone needs the ascendancy. thats my typical go to. this season however i seem to not be able to carry anymore due to some very weird game behaviour, which causes my teammates game to crash the moment zarokh appears. i can finish the fight, get loot, get ascendancy all works fine. but since the game crashes before the fight starts of course the partymembers dont get the ascendancy. i tried and replicate it and it crashed every time. i dont know if it is something on my setup or whatever, i wouldnt even know where i should start to search for this fault.

i am happy to provide any more info/details if you let me know what you neeed.

tl;dr
- crash happens in party
- came crashes for partymembers, not for leader
- crash happens as soon as zarokh appears
- game client just shutdown, no error message
- happens everytime this season
- didnt happen the season before (same build)