Thank's for your reply L&LD.Welcome to the forums @Ernestas.
The best settings are mostly the ones not toggled past their defaults. After a full reset of the router, and after you have flashed the firmware you want to use on it.
This is how to do the reset after you have flashed the most current firmware you want to use on it.
[Wireless] ASUS router Hard Factory Reset | Official Support | ASUS Global
And these are the best practices (note there are very few changes past defaults) for the most performant and stable network.
Fully Reset / Best Practice Setup / More
And more links for your perusal.
Almost all L&LD Links
About L&LD
Just go with the defaults unless you have a problem that requires you to change them. The default settings are chosen for a reason.So I just would like to know what I should change in the settings to improve Stability/range.
Im happy with everything, except in another room wifi signal I expected will be better , turned off WPS and enabled 160mhzAnother recommendation: Use the defaults! Also use Dual Band Smart Connect and enable 160 MHz and DFS. If you are in a crowded area WIFI wise, setting the 2.4 GHz to 20 MHz is a good idea. Turn off WPS. Use a SSID with 8-10 alpha numeric characters and the same for the passphrase (NO SPECIAL CHARACTERS!)
I highly recommend the Asus beta firmware: RT-AX86U : 9.0.0.4.388_20477
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