My discord for my mods, support, and updates

The problem:
Curie uses her fists in her synth form instead of using the laser gun she has in her inventory.

The fix:
Contrary to popular belief, this is not an AI issue (i've seen the false information spread around that it's because she's using her nannybot AI instead of the human, this is wrong.)

From user "kljadfjhadf":

"The game gives her her companion weapon via script (specifically QF_COMCurieQuest_0016454E) when the scene in which she moves into a new body begins. It isn't in the synth Curie actor's inventory by default, so she doesn't recognise it as her default weapon, which is why she constantly tries to switch to her actual default weapon (her fists) whenever she approaches melee range. That's why simply adding the weapon to the actor's inventory stops this stupid behaviour and enables her to bash with her gun/continue firing in close quarters rather than constantly switching weapons. There are various theories going around that it's because she retains her Mr Handy combat behaviour but that is wrong."

So, by effectively giving her another copy of the weapon into her inventory, this effectively fixes the issue.

Requirements:
Spell Perk Item Distributor

Installation:
This fix utilizes SPID which will distribute the item to synth Curie's inventory at the start of the game. On an existing saves, since inventories are baked into the save file, you can do a resetinventory after installing this or just use console commands to add the weapon to her inv.