Does it make sense to leave only 802.11n (disable a/b/g support)?

Question

WiFi

All my devices support 802.11n. Does it make sense to disable a / b / g support in the router? Will it improve the stability and speed of Wi-Fi? Or, on the contrary, will the devices have no choice, which sometimes will only harm?

Answer 1

There is. Problems can often be due to frequencies. 2.4 is more long-range than 5. But if there is a lot of wi-fi in the area, then there is a good chance that most of them are on 2.4. And "n only" in the case of only n-devices, of course, should be used.

Answer 2

With the same transmitter power, 5GHz is longer-range with line of sight. At the same time, frequency 2.4 is loaded with various radio garbage "to the eyeballs" (bt, microwave, neighbor's wifi), unlike 5, which is not common. In addition, there is no channel overlap on 5 as with 2.4
As for disabling everything else: I have seen many devices that reduce the working “version” of 802.11 depending on the distance / noise / errors / flashes in the sun (n-> g-> b) thereby correcting the stability of the signal.

Answer 3

Usually yes. Otherwise, 802.11n, upon seeing the a / b / g frame, falls into the “protective mode” of compatibility. If you leave only 802.11n, this will not happen, frames from a / b / g devices will be considered as interference. But if there are a lot of such devices around, it may turn out that it has become worse to work. Tested with a weekly trial.
Going to 5Ghz will also help, because. such devices are more expensive and, therefore, rarer - in 5Ghz "the air is cleaner." It's better to use both approaches.
Write about the results. :) Good luck!

Answer 4

My verdict: it's better to set N-only whenever possible. Moreover, in this case, not only outdated networks will be a hindrance for us, but we will also be a hindrance for outdated networks, which means that when auto channel selection is enabled, the points will be grouped: N into a bunch and G into a bunch.