Unstable APs

I recently replaced an old RB112 with a brand new RB433AH i one of my nodes.
I moved from RB112 to RB433AH the same XR2 and RB54 I use to provide service at 2.4 and get to my backbone at 5.8
I configured routerboard the same.
But now all the clients that connect using wpa are unstable.
I have 6 clients that connect with no encryption, they are stable.
I have 15 clients that connect using wpa-psk1 security profile
And 6 more that connect using other psk
They all connecto to the same radio, using 2 virtual APs.

On RB112 with 2.9.51 they worked perfectly
ON RB433AH with 3.20 they connect, disconnect, reconnect… and so on…

If I disable 2 of the three interfaces (no matter which) the clients that connect to the remaining AP get to work steadily.
If I add any other AP, they all become unstable.

But… somehow, without touching anything… they start working fine and remain connected steadily for a few hours… just to start again disconnecting.

I’m pasting here wireless configuration, just in case anyone wants to give them a look…

/interface wireless> pr
Flags: X - disabled, R - running
0 R name=“wlan2.4” mtu=1500 arp=enabled
interface-type=Atheros AR5413 mode=ap-bridge ssid=“Eco”
frequency=2447 band=2.4ghz-b scan-list=default antenna-mode=ant-a
wds-mode=disabled wds-default-bridge=none wds-ignore-ssid=no
default-authentication=yes default-forwarding=no default-ap-tx-limit=0
default-client-tx-limit=0 hide-ssid=yes security-profile=default
compression=no

1 R name=“UltraWiFi” mtu=1500 arp=enabled
master-interface=wlan2.4 ssid=“Ultra” wds-mode=disabled
wds-default-bridge=none wds-ignore-ssid=no default-authentication=yes
default-forwarding=no default-ap-tx-limit=0 default-client-tx-limit=0
hide-ssid=no security-profile=wpaUltra

2 R name=“wlanO” mtu=1500 arp=enabled
master-interface=wlan2.4 ssid=“Ofi” wds-mode=disabled
wds-default-bridge=none wds-ignore-ssid=no default-authentication=yes
default-forwarding=no default-ap-tx-limit=0 default-client-tx-limit=0
hide-ssid=yes security-profile=wpaOPyME

3 R name=“wlan5.8” mtu=1500 arp=enabled
interface-type=Atheros AR5213 mode=station-wds ssid=“Oeste”
frequency=5500 band=5ghz scan-list=default antenna-mode=ant-a
wds-mode=disabled wds-default-bridge=none wds-ignore-ssid=no
default-authentication=yes default-forwarding=yes default-ap-tx-limit=0
default-client-tx-limit=0 hide-ssid=no security-profile=default
compression=no

Thanks for your support!

Chofex

why you dont use mac filtering and acces list?

It’s a HotSpot, it has to remain open so anyone can authenticate…

I believe this can be a wireless faulty behaviour of 3.20

Should I downgrade to 2.9.51 ?

That version was working perfectly well in RB112…

I use RB433 AH with OS 3.20… i have same problem. I just upgrade to OS 3.22 and i will see what will be happening, I hope that this version work stable. What happen with You did you downgrade OS to 2.9.51??? I need solution for this problem.

I removed all virtual APs, set security profile to default, and, of course, ad to reprogram each client to this setting.
Now it’s stable, but still quite slow…
I’m moving to 3.22

Chofex