@tosnic
All I can say is that I'm running my Raspberry Pi 3B+ with the "official" Powersupply
( TT Electronics, Model DSA-13PFC-05 FCA / 5,1 Volt / 2,5 A)
and Recalbox 6 (Overclocked to "Extreme") for Years without any "Undervoltage" Alert.

Also my Raspberry Pi3B running LibreElec 9.2.8 and using the same "official" Powersupply runs without Problems for Years too.

@aldébaran woah, je me sens un peu ridicule d'avoir poser cette question tellement c'était simple et évident 😌

En tout cas, merci beaucoup 👍