Either way, this is not a Realism related issue.
It is in its origin, but mine de-facto. I was using SPT Realist v3.7.1 for 3.7.0 client
Case closed 
Hey!
Upon raid start the game freezes and I'm getting this in the server terminal:
Realism Mod: Failed To Find Custom Preset For Bot marksman At Tier 1
Weapon 5ae08f0a5acfc408fb1398a1 was not generated correctly...
I have just started using SVM and it might be causing the issue.
Just a few of the 321 users online
