@NewKid I don't have an Rpi4, so I can't test it. I don't know how much performance you want, Rpi4 already has a good performance, but if you want to test the overclock, see this topic: https://forum.recalbox.com/topic/21649/overclocking-pi4-with-recalbox-7

Bonjour. Merci pour la réponse, je vais Check le recalbox manager pour voir ce week-end. C’est bizarre car j’avais forcé le Jack dans recalbox.conf. Je vous tien au courant encore merci!