Thanks, yes that kind of tools is what I use to test internet connection.
My internet connection is a symmetric 300 Mbs line and tools report about that number (not less than 280) from ethernet connections to my internal router. So it is OK.
But I would like to test other wifi connections from my devices (mobiles and computers) and internal connection to compare the results using 2,4 GHz and 5 GHz and connection to one router or the other.
I suppose I have to create a server and install client software to do the tests, and connect the server to the wan port of the main router or to the ports I wan to test if they get the connection speed.
For example between ethernet links (there are two routers interconnected by a non managed switch, all connections are supposed to be Gigabit ethernet, wifi is activated in both routers, the main being a ACX with 160 MHz wide channles in 5 GHz and the other an AX with 80 MHz).
That is where a bit of guidance about the easiest programs and what to test and how to look for points of weakness.
By the way: yes I use mainly windows in the computers and android in mobiles.