@Lacmzde , How are your speed values with WIFI? What kind of device do you use? If it is a computer, what kind of network card do you have?
Personally I consider WIFI and LAN to be different. If you have full speed via LAN and less with WIFI, the reason is WIFI. The Fibre Cut has nothing to do with this, because then you would have less speed on the LAN.
Greetings
Daniele