Specific frame drop

[any13th]

In Dirke Memorial Park when fighting the Iglis Launa boss monster, after using Feri's Heat Edge craft my game would go from 60 fps to 23 fps.
The frame drop would linger when my next character got a turn and would only go away once I made them do an action like attack.

Some of my graphics settings are:
Asset Caching: Auto
Display: Borderless
Vsync: On
Frame Rate Limit: 60
Motion Blur: On
Local Shadowing: High
Anti-Aliasing: High
Anisotropic Filtering: High
Screen-space Reflections: High
Volumentric Lighting: Default

Some info about my pc:
Processor: Intel Core i7-9750H CPU @ 2.60GHz,
GPU: NVIDIA GeForce GTX 1660 Ti
RAM: 16GB
Video RAM: 8GB
OS: Windows 10

The only other similar instance of a noticeable frame drop that I can recall was during Van's first Grendel transformation cutscene way early on.
But outside of those two specific instances the game has been running super smoothly. (Guessing its all the particles or smth)
Not a big deal if there's no immediate remedy, just thought it was worth reporting.

Edit: I think the reason for these frame drops was because I have the autosave set to 5 minutes, and sometimes it triggers in the middle of a cutscene or in the middle of a fight.
So if the game randomly lags when seemingly very little is going on, that might be why.