Supreme Calamitas - Calamity Mod

[CatnipWitch]

So I've killed Supreme Calamitas countless times, and the only thing that it keeps dropping is just the Supreme Healing potion.

I read that if it's killed by a "butcher" option, overpowered weapons or instantly killed by other methods, that's all it will drop.

However, I'm not killing it with mods/commands or anything, and the weapons I'm using are the ones from the calamity mod (are any of them considered "overpowered" for this boss?)

I do have some accessories from different mods, but not sure if that affects it.

Weapons I use:
SDFMG
Quasar's Flare (I've killed it without it a few times)
Photoviscerator (same thing as the quasar's flare)

My equipments:
Auric Tesla Set
The Community
Autoinjector (Alchemist npc mod)
Celestial Tracers
Affliction
Elemental Quiver
Core of the Blood God

Potions I use
Calamita's brew
Calamity combination
Ascension potion
Invincibility potion
Sunfury's potion
Midnight potion
deer blood

If I recall correctly, the ascension, invincibility, sunfury, midnight potions and deer blood were a later addition, I've killed it before without those.

Also I summon the Cosmic Immaterializer and the Watcher Amulet (alchemist npc mod)


Anyone has any idea what may be going on? Do any of these items are really considered "overpowered" for that?