@Nukos Please understand that all these are theoretical figures in a vacuum. No one will answer your question directly and specifically describe the workload and clients. give a clear technical task...

@Tomaszs are there any other wireless devices that can be used to check wifi? other phones/laptops? also try to update firmware everywhere if you haven't done italso try to update firmware everywhere...

@Nukos These are all theoretical figures in a vacuum. Describe your task, the number of clients planned to be connected via WiFi, their load, and the speed of the Internet channel. and also whether...

@Gibbisan first update the firmware to latest version on router

@Ced2ric disable wifi6 on access points in settings and set encryption type to wpa2/aes wifi6 hotspots use wpa3-sae encryption and there are problems with it in terms of roaming

@Tomaszs First, make sure your phone connects to a 5 GHZ hotspot. also use other speedtest servers, because depending on the choice of country/provider the speed can vary greatly