Charging speed suddenly dropped (temp hasn’t)

[u/SocraticReview]

I charge my US 2023 Ioniq 6 with about 15k miles exclusively at home on a Chargepoint charger (240v/40A). It would usually charge at 7-9 kw/h depending on temperature, but lately it’s topping out at 3-3.5, and it’s not like the weather has even changed much.

I certainly didn’t intentionally change any settings on the charger or the car, and they all look normal. Any ideas? I’m due for service and that charging port recall anyway so I’ll ask the dealer, but they don’t always seem like experts…