How to stabilize Wi-Fi on MikroTik?

Question

Android

Hello.
What I have not tried and could not get Wi-Fi on MikroTik RB951Ui-2HnD to work stably. The problem is that after 10-12 minutes the traffic stops running. At all. When you try to disconnect / connect again, the SSID disappears from the air. If it disconnects / connects several times, then ASUS RT-N12 ), and connect to it already, then there are no problems, Wi-Fi starts working stably again for 10 minutes, etc.
Everything else works stably, without overlays and failures, and only Wi-Fi prevents me from living.
If you connect any router or access point to MikroTik with a cable (I connected D-Link DIR-615 Rev. K1 , Sagemcom v2407 , Tp-Link TL-WR740n , Wi-Fi works for hours. Having tried a lot, I made Wi-Fi work more or less stable on my laptop, but the Android phone still turns off after 1-12 minutes (at work, in a cafe, and in any other place, all my devices work with Wi-Fi stably).
Of course, I would use all of the above routers, but I need an IPsec tunnel to a working computer and other MikroTik chips .
At first I thought that the problem was in the noisy air (there were more than 50 routers of all stripes around me), but no, the air is clean at the new address, there are only three routers nearby, but the problem is the same.
Any ideas on what I'm doing wrong.
Here is the config now on my MikroTik-ke :

# mar/25/2016 14:54:50 by RouterOS 6.34.3
# software id = KNDM-RWIV
#
/interface ethernet
set [ find default-name=ether1 ] name=ether1-gateway
set [ find default-name=ether2 ] name=ether2-master-local
set [ find default-name=ether3 ] master-port=ether2-master-local name=ether3-slave-local
set [ find default-name=ether4 ] name=ether4-slave-iptv-STB
set [ find default-name=ether5 ] master-port=ether2-master-local name=ether5-slave-local-PoE
/interface bridge
add name=bridge-iptv protocol-mode=none
add name=loopback0

/ip neighbor discovery
set ether1-gateway discover=no
set ether2-master-local discover=no
set ether3-slave-local discover=no
set ether4-slave-iptv-STB discover=no
set ether5-slave-local-PoE discover=no
set bridge-iptv discover=no

/interface wireless security-profiles
set [ find default=yes ] authentication-types=wpa2-psk eap-methods="" group-key-update=1h mode=dynamic-keys wpa-pre-shared-key="werystrongkey" \
    wpa2-pre-shared-key="werystrongkey"
add authentication-types=wpa2-psk eap-methods="" group-key-update=1h mode=dynamic-keys name=Home-Wi-Fi supplicant-identity="" wpa2-pre-shared-key=\
    "werystrongkey"
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-onlyn bridge-mode=disabled channel-width=20/40mhz-Ce country=russia2 disabled=no disconnect-timeout=15s \
    frequency-mode=regulatory-domain mode=ap-bridge multicast-buffering=disabled multicast-helper=disabled preamble-mode=short security-profile=\
    Home-Wi-Fi ssid=Peresmeshnik update-stats-interval=5h wireless-protocol=802.11 wmm-support=enabled
/ip neighbor discovery
set wlan1 discover=no

/interface bridge port
add interface=ether2-master-local
add interface=wlan1
add bridge=bridge-iptv interface=ether1-gateway
add bridge=bridge-iptv interface=ether4-slave-iptv-STB

/system clock
set time-zone-name=Europe/Moscow
/system leds
set 5 interface=wlan1
/system logging
add topics=wireless,debug
/system ntp client
set enabled=yes primary-ntp=pool.ntp.org secondary-ntp=91.207.136.55

PS
@sizaik is invited to
the question Evgeny Bychenko is invited to the question

Answer 1

The problem was not the Wi-Fi. The problem was in the short Lease time.
I found the solution here: Fix a bug / feature of the Mikrotik router?
PS
Well, there is a positive moment. I now have ultra stable Wi-Fi.

Answer 2

I didn’t catch my eye for anything in the config, except perhaps for preamble-mode=short (change to both).
Usually, in such strange cases, it is better to reset the configuration (just for the wireless interface, and not for the entire router. The item is available in the interface via the winbox) and try to set the minimum parameters: mode, channel, security profile. It happens that constant modifications of the interface settings lead to problems in their operation at the chip level, which are not visible in the interface.

Answer 3

If my memory serves me right, then WiFi can clog the channels. Try to take the lowest channel.

Answer 4

Evgeny Bychenko did not find a reset configuration of the wireless interface through winbox ... Can you describe in more detail?

Answer 5

Guys who will take to administer my home mikrotik: make stable wifi and + set up a backup server?

Answer 6

You should update the firmware to 6.46.8 (Long-term), otherwise your 6.34.3 is very old and full of holes.