OK, i switch to access point, to check the speed, perfect. I switch back to router mode, and then, everything's fine !! i got my 1gb speed, don't understand why but it works !

@Kevin_Z even the ethernet connection is low speed, no more than 300mb on a 1 gb connection. The problem is the routing process , no issue in access point mode. If you want more speed, buy a better...

@benettonb1 i guest there is no way ! even connected in gigabit ethernet, i could never go through 300mb on a 1 gb internet connection. idem in wifi 6 from a iphone 11, 200-250mb max. The problem is...

@Pascal85 J'ai la meme chose sur un AX50, en filaire derriere le routeur, je suis limite a 300Mb, en wifi 6 depuis un iphone 11, entre 200 et 250, alors que depuis ma borne Airport en wifi 5 , je...