I had 6 freezes now... not even task manager came up anymore... had to logout... before game ran flawless. I will rollback and report...
EDIT01
Did some checks.
This version with this location and former version with those locations.
Seems it only happens in vault88 (where I just arrived)
I am almost sure its not SS2 but something in my vault88?
EDIT02
Back on SimSettlements 1.0.3 and Framework 2.0.7
Found my little trouble maker
-> Scrab Everything (now disabled)
No freezed Molerats popups anymore
No freeze when firing anymore
No freeze when using quicksave anymore
All hail the polish steam Fallout 4 forum :D
That brought me on that path