Unreliable 2.4ghz on wAP ac

RouterOS Wireless Networking
1

Hi folks,

I am having trouble with the 2.4GHz interface on my wAP ac.

When I connect to it, I get droupouts, packet loss and times where the ping from laptop to wAP ac increases to 3-4 seconds.

5GHz works fine.

I live in a rural area and there is very little interference around.

I have tried changing the 2.4GHz channel to no effect.

I am starting to think it is a hardware issue.

What might I have missed before I go replacing hardware?

Here is my config:

2026-07-29 11:29:28 by RouterOS 7.21.3

software id = 

model = RBwAPG-5HacD2HnD

serial number = 

/interface bridge
add comment=bridge name=bridge1
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-onlyn country=australia disabled=no 
frequency=2437 installation=outdoor mode=ap-bridge ssid="2ghz"
set [ find default-name=wlan2 ] band=5ghz-n/ac country=australia 
default-forwarding=no disabled=no frequency=5520 mode=ap-bridge ssid=
"5ghz"
/interface wireless security-profiles
set [ find default=yes ] authentication-types=wpa2-psk mode=dynamic-keys 
supplicant-identity=MikroTik
/interface bridge port
add bridge=bridge1 interface=ether1
add bridge=bridge1 interface=ether2
add bridge=bridge1 interface=wlan1
add bridge=bridge1 interface=wlan2
/ip dhcp-client
add comment=dhcp interface=bridge1
/system clock


set time-zone-name=Australia/
/system identity
set name="studio roof wAP ac"
2

There's nothing weird in the config which would explain unstable operation.

However, you might want to try installing new wifi-qcom-ac package instead of wireless ... it unleashes all the performance of AC radios (which is somehow crippled by running legacy wireless driver). Beware that wifi-qcom-qc is larger than wireless and it can push device with only 16MB storage (such as your wAP ac) over the edge. If you go ahead with installing it, I recommend to use netinstall ... which makes sure that any remnants of old configuration is erased, maximizing free space. You'll have to reconfigure AP afterwards (don't use backup, it might bring back storage clutter ... and wifi configuration is incompatible with wireless configuration anyway).

3

I don't see you setting the transmit power.
I noticed on a small mAP2nd that with transmit power set to default, the frequency reflections did literally lower my possible bandwidth.

In configured it using capsman, below the configuration line:
/caps-man configuration
add channel.band=2ghz-b/g/n .control-channel-width=20mhz .extension-channel=disabled .frequency=2412 .tx-power=14 datapath.local-forwarding=yes name=auto-legacy-main security=\
auto-legacy-sec-sollan ssid=XXXXXXXXXXX

Another thing you may want to check, is how much interference you have (Android app WiFi Analyzer etc.).

4

Set bandwidth to 20MHz on 2.4GHz radio (and 40 or 80 on the 5GHz radio).