It’s a bit of a shot in the dark unfortunately. There’s no clear explanation as to why this is happening.
Although, I can see that the crashes occur immediately after our anti-cheat service, Easy Anti-Cheat, attempts to initialise. Could you please try repairing Easy Anti-Cheat using the EasyAntiCheat_Setup executable located here:
C:\Program Files (x86)\Steam\steamapps\common\Warhammer Vermintide 2\installers\EasyAntiCheat