I have a problem with upload speeds on mobile devices. On the two IPhones I cannot exceed +-45mbps. On the Samsung I achieve +-80mbps. Windows based devices reach full upload speed (i.e. 100mbps). The router is set in AP mode. Changing channels, disabling wifi etc doesn't change anything. Being connected via cable (to AX53) I achieve full link speed. Changing the firmware does not help either.