To get Bijin follower's hair physics worked,
Bijin Wives.esp
Bijin NPCs.esp
Bijin Warmaidens.esp
Bijin AIO - Hair Physics.esp
plugins must be deactivated. Only Bijin AIO.esp must be enabled.
You find a minigun in some idiots container called the Problem Solver Keep the show disabled button now works (apparently theres already a weapon that is just a painted automatic assualt rifle in Fallout 4's Nuka Cola DLC so now the joke is ruined)