I was running radshares on Oxomoco - Void when I repeatedly ran into crashes every time I loaded into the squad.
After multiple crashes with different squads I remade one squad and asked them for permission if I could mess around to find out the cause of the bug.
After experimenting, every time without fail, when loading into the mission with this loadout:
Mirage Prime
Dread (Incarnon)
Despair (Incarnon)
Hate (Incarnon)
No Companion
Everyone except the host would crash. Happened four times. If I tried hosting, I could load in, but everyone else would crash.
After switching my frame to Titania Prime and my primary to Tenet Arca Plasmor, the issue was fixed. I switched back once more to test the issue and it replicated the issue, confirming this had almost certainly something to do with my loadout.
For the help desk people the bug number I got after submitting the error was WAR-3711517.