The phone is worked harder when set to fast charging which uses alot of internal resource so when a person then decides to use the phone at the same time this then needs resources too so the phone reacts to give you those resources.
Daily Driver > Samsung Galaxy s²² Ultra 256Gb.
Samsung Gear s³ Frontier Watch.
Samsung Galaxy Watch⁴ Classic.
The advice I offer is my own and does not represent Samsung’s position.
I have no affiliation with Samsung.
