crashing to desktop anytime i play with 1 specific person

playing poe 2 works fine for 99% of the time anytime i join my buddy whos on mercenary witch hunter or anyone else joins him we literally cannot play with him, maps we crash, trials we crash. he has reinstalled we have reinstalled, we have verified files. we have literally no idea how to fix it. it has to be something on merc or his character specifically like a skin he bought thats makes us crash everyone crashes playing with him


update we have discovered that it is tied to his "explosive shot" ability to detonate all of his grenades respecced his build no more crashes we have also seen other forum posts on this same issue seems merc grenadier builds crash other players games