Louis is the “same name” as Clovis. I mean by that it is how the name evolved as the dynasties changed their language from Frankish to Latin to then French.
Clovis was the first king unifying all Franks, so many Frank kings are named Clovis … and later ones are named Louis.
Is it possible that the native card reader is slower than the usb-c one ? Maybe a bus bandwidth issue ?