I’d recommend that you run through the solutions here: https://support.fatshark.se/hc/en-us/articles/360038965013--PC-PC-crashing-losing-responsiveness-or-Blue-Screening-BSOD-
Apologies for the delay @Chillice, this should now be resolved for you. Please let me know if you have any problems.
You can always bypass the launcher completely (instructions here, at the bottom of the page): https://support.fatshark.se/hc/en-us/articles/360021423613--PC-Problems-with-the-launcher-
As above, unfortunately it’s unlikely Easy Anti-Cheat will be whitelisting this.
Your installation appears to be corrupted. Have you ran through every solution here?: https://support.fatshark.se/hc/en-us/articles/360021425793--PC-How-to-resolve-data-corruption-errors
This is the primary information you need to run with - lots of potential solutions online, some as simple as reinstalling the GPU driver. May be worth reaching out to Microsoft Support.
The Vermintide 2 crash dump will be of no use in this scenario.
In cases of regular, non-BSOD crashes in Vermintide 2, what we need to see is the crash report produced which will contain a long ‘GUID’ string. 
Does the whole PC become unresponsive - resulting in you needing to restart the PC?
Sorry about this @Constrictus - it’s my understanding that our Console Developers are already aware of and working on this particular issue, but I’ve queried it to be sure.
Technically intended, but not ideal. We’ll see if we can alleviate this.
It would be ideal if you could try another controller, if that’s an option for you.
I know you’re reluctant - but please try with 6 Worker Threads.
Noted - our developers are aware and working on addressing this. Thank you for your report.
To confirm, are you both playing on the Official realm (as opposed to the Modded realm)?
It looks like you’ve since been able to log in and play as normal, is that right?
Looks like a corrupted installation here. Try Verifying the Integrity of Game Files via Steam:
- Right-click Vermintide 2 in your Steam library sidebar
- Select ‘Properties’
- Select the ‘Local Files’ tab
- Select the ‘Verify the Integrity of Game Files’ button
- When complete, close and reopen Steam
Sorry to hear this Chillice! Could you please send me the URL to your Steam profile, so we can look in to this?
We’re releasing a small update to our anti-cheat service (Easy Anti-Cheat) at 11am CEST to address an issue. Now I can’t be sure, but it may help you.
Could you let me know, after that time, if the crashes persist (with the controller hooked up)?
We’re releasing a small update to our anti-cheat service (Easy Anti-Cheat) at 11am CEST, to address an issue. I believe it may help with what you’re experiencing here.
Could you let me know, after that time, if the crashes persist?
I should add - if the error is occurring for all of you, and you’re all using the same ISP, I’d recommend that you contact your ISP and explain your connectivity issues to https://5107.playfabapi.com/ . They may be able to identify the issue on their side.