Arguably, the ATmega328P is being left behind as ‘the Arduino processor’ because Arduino’s are following the rest of the world and going 32bit.
The new WiFiNINA_Generic v1.8.15-0+ fixes severe limitation to permit sending much larger data than total 4K. The new WiFiNINA_Generic v1.8.14-5+ fixes bug causing data lost when sending large files, ...