AnonimowyUzytkownkk1 wrote: Is there any difference between the channels? (more MB download, upload or ping)
There is no difference.
Set the channel on which there are no or the smallest signals from neighboring networks.
UPC routers very often set channels on the 5GHz band above No. 100. This is a band shared between wifi and special applications. This is often the only option for obtaining fast connections on 5GHz, because the basic band, i.e. channels 36...64, is sometimes clogged, similarly to the 2.4GHz band. You can expect that the connection may be interrupted from time to time, but something for something.
It is important, apart from choosing the channel number, to choose the channel width - 20/40/80/160MHz. But how will you do the measurements - diagnostics of the wifi network -->
https://www.elektroda.pl/rtvforum/topic3158772.html Preferably InSSIDer (Win), possibly Wifi Analyzer (Android).
One measurement DIRECTLY at the router
Subsequent measurements in typical places where mobiles/computers are used.
And post the screen accordingly:
https://obrazki.elektroda.pl/4257484200_1454694642.png /
https://obrazki.elektroda.pl/9695492800_1454695020.png And finally - wifi for playing is usually a poor choice in an apartment in a block of flats.