Please ensure you have appropriate Anti-Virus and Firewall exceptions in place for Darktide.
It may also be worth performing a Selective Startup, which can help identify whether a background application is the cause of your crashes:
- Press the Windows key
- Type ‘msconfig’ and select ‘System Configuration’
- On the ‘General’ tab, select ‘Selective Startup’
- Deselect ‘Load startup Items’
- Reboot your PC