Troubleshooting subpar client connection on hap ac3 - client intel ax210 on a 5Ghz connection

Hello everyone,
I'm trying to troubleshoot why my WiFi 6E capable client ( Intel AX210 PCIe ) if getting a subpar connection.

I set my Wifi Interface to run on 80Mhz XXXX, however I'm confused by the 5180/20-Ceee/ac is it doing 20Mhz? The Info in the registration seems to suggests it is running on 80Mhz.
I'm also trying to figure out, why my connection is running on 1S/SGI instead of 2S/SGI. I can see that my client tries to negotiate for 2S, but settles for 1S.
In addition to that I can see a stable overall-tx-ccq of 100%, when the connection is not used, but when I start to download/transfer any files over the connection It goes below 50%. When transfering Files I rach a maximum of 30Mb/s, which also seems low, if the negotiation settle for a TX-Rate of 390Mbps-80MHz/1S or am I wrong?

If I missed to provide any relevant information, please let me know the command and I'll add it.

Extension Card https://www.amazon.de/dp/B08M5GZ2M8

System Info

/system resource print
                   uptime: 55s                
                  version: 7.20.6 (stable)    
               build-time: 2025-12-04 12:00:39
         factory-software: 6.46.6             
              free-memory: 176.9MiB           
             total-memory: 256.0MiB           
                      cpu: ARM                
                cpu-count: 4                  
            cpu-frequency: 448MHz             
                 cpu-load: 6%                 
           free-hdd-space: 88.6MiB            
          total-hdd-space: 128.0MiB           
  write-sect-since-reboot: 21                 
         write-sect-total: 114020             
               bad-blocks: 0.1%               
        architecture-name: arm                
               board-name: hAP ac^3           
                 platform: MikroTik     
      
/system routerboard print
       routerboard: yes              
        board-name: hAP ac^3         
             model: RBD53iG-5HacD2HnD
     serial-number: XXXXXXXXXXX     
     firmware-type: ipq4000          
  factory-firmware: 6.47.1           
  current-firmware: 7.20.6           
  upgrade-firmware: 7.20.6           

/system package print
Columns: NAME, VERSION, BUILD-TIME, SIZE
# NAME      VERSION  BUILD-TIME           SIZE     
0 routeros  7.20.6   2025-12-04 12:00:39  11.5MiB  
1 wireless  7.20.6   2025-12-04 12:00:39  1848.1KiB

Wifi Infos

/interface wireless print detail
Flags: X - disabled; R - running 
 0  R ;;; Wifi

 1  R name="wlan-5g" mtu=1500 l2mtu=1600 mac-address=XX:XX:XX:XX:XX:XX arp=enabled interface-type=IPQ4019 mode=ap-bridge ssid="XXXXXXXX" frequency=5180 band=5ghz-onlyac channel-width=20/40/80mhz-XXXX 
      secondary-frequency="" scan-list=default wireless-protocol=any vlan-mode=no-tag vlan-id=1 wds-mode=disabled wds-default-bridge=none wds-ignore-ssid=no bridge-mode=enabled default-authentication=yes 
      default-forwarding=yes default-ap-tx-limit=0 default-client-tx-limit=0 hide-ssid=no security-profile=wlan-private compression=no 

/interface wireless monitor wlan-5g once
                 status: running-ap            
                channel: 5180/20-Ceee/ac(24dBm)
      wireless-protocol: 802.11                
            noise-floor: -107dBm               
         overall-tx-ccq: 49%                   
     registered-clients: 3                     
  authenticated-clients: 3                     
            wmm-enabled: yes                   
    notify-external-fdb: no   

/interface wireless registration-table/print                        
Columns: INTERFACE, MAC-ADDRESS, AP, SIGNAL-STRENGTH, TX-RATE, UPTIME
 #  INTERFACE  MAC-ADDRESS        AP  SIGNAL-STRENGTH  TX-RATE                 UPTIME  
 8  wlan-5g    XX:XX:XX:XX:XX:XX  no  -53dBm@6Mbps     390Mbps-80MHz/1S        1h7m40s 

/interface monitor-traffic wlan-5g once
                       name:   wlan-5g
      rx-packets-per-second:       771
         rx-bits-per-second: 489.8kbps
   fp-rx-packets-per-second:       771
      fp-rx-bits-per-second: 489.8kbps
        rx-drops-per-second:         0
       rx-errors-per-second:         0
      tx-packets-per-second:    19 403
         tx-bits-per-second: 234.4Mbps
   fp-tx-packets-per-second:    18 122
      fp-tx-bits-per-second: 219.0Mbps
        tx-drops-per-second:         0
  tx-queue-drops-per-second:         0
       tx-errors-per-second:         0


  • C - 20mhz control channel
  • e - 20mhz for each extension channel

total 80mhz

You're running legacy wireless driver. There's a new driver - wifi-qcom-ac - which does a much better job on AC devices.

If you want to try, uninstall wireless package and install wifi-qcom-ac. You'll have to configure wireless part from scratch, config is done in /interface/wifi

You might want to downgrade to 7.19.6 ... it seems to be a very stable version whereas 7.20 series seems to cause a problem here and there as reported by forum users.

Thank you for the suggestion. I switched from the wireless to the wifi-qcom-ac package and it doubled the connection speed.

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