WRT3200ACM multiple WIFI disconnects

Exactly I have the same scenario.

But how we can solve this?
There must be hopefully a solution, without trow away the devices.

Have you flashed this device to OpenWRT?
Have you multiple SSID configured?

Can you send me your config for the WiFI?

So I can compare with my settings.
Maybe this can help me.

I don't think there is a way. Someone needs to improve the drivers, but this requires someone to know the hardware and develop the drivers. Development on these drivers has stagnated for 12 months. The hardware manufacturer Marvell sold off this division so they won't be making any new hardware... I don't think things will get better. Given the state of wifi drivers in general and manufacturers lack of support I think I will move to enterprise access points in the future. Enormous companies will listen to enormous companies...

I guess you have tested also a lot with this bug.

Can it possible that the WiFi can work, when I reset the router, start configure only one SSID per AP?

I this case I have the chance to split the AP's in two groups (internal/guest).

When I move the AP's to a good new loaction and configure then the TX rate, country code & channel in a optimized way, so I can have a chance, that this will work?

In this scenario I doesn't will have two 2 SSID's on each AP.

You have also tested this out?

Even when I don't want to spend more time here, then maybe you can give me a good tip here, because I don't want to throw away this, when it works for some other users, like @eduperez .
You have the same problem as me and a good knowledge about this scenario.

I'm not sure what makes it better. It definitely seems like multiple SSIDs is worse, but it's just an impression. So far I just put up with it mostly, and then occasionally walk around and flip the switch on the AP... I also do a nightly reboot.

I would definitely try to arrange multiple APs with one SSID on each radio. See if that improves things, but I don't think it will eliminate your problems.

Sure, here you are:

root@router:~# cat /etc/config/wireless 

config wifi-device 'radio0'
	option type 'mac80211'
	option path 'soc/soc:pcie/pci0000:00/0000:00:01.0/0000:01:00.0'
	option hwmode '11a'
	option htmode 'VHT160'
	option channel '100'
	option country 'FR'
	option txpower '27'

config wifi-iface 'acuario_lan0'
	option device 'radio0'
	option mode 'ap'
	option network 'lan'
	option ssid 'acuario'
	option encryption 'psk-mixed+aes'
	option key '********'
	option ifname 'wlan_lan0'
	option isolate '0'

config wifi-iface 'acuario_ext0'
	option device 'radio0'
	option mode 'ap'
	option network 'ext'
	option ssid 'acuario_ext'
	option encryption 'psk-mixed+aes'
	option key '********'
	option ifname 'wlan_ext0'
	option isolate '1'

config wifi-iface 'acuario_kid0'
	option device 'radio0'
	option mode 'ap'
	option network 'kid'
	option ssid 'acuario_kid'
	option encryption 'psk-mixed+aes'
	option key '********'
	option ifname 'wlan_kid0'
	option isolate '0'


config wifi-device 'radio1'
	option type 'mac80211'
	option path 'soc/soc:pcie/pci0000:00/0000:00:02.0/0000:02:00.0'
	option hwmode '11g'
	option htmode 'HT40'
	option channel '1'
	option noscan '1'
	option country 'FR'

config wifi-iface 'acuario_lan1'
	option device 'radio1'
	option network 'lan'
	option mode 'ap'
	option ssid 'acuario'
	option encryption 'psk-mixed+aes'
	option key '********'
	option ifname 'wlan_lan1'
	option isolate '0'

config wifi-iface 'acuario_ext1'
	option device 'radio1'
	option network 'ext'
	option mode 'ap'
	option ssid 'acuario_ext'
	option encryption 'psk-mixed+aes'
	option key '********'
	option ifname 'wlan_ext1'
	option isolate '1'

config wifi-iface 'acuario_kid1'
	option device 'radio1'
	option network 'kid'
	option mode 'ap'
	option ssid 'acuario_kid'
	option encryption 'psk-mixed+aes'
	option key '********'
	option ifname 'wlan_kid1'
	option isolate '0'


config wifi-device 'radio2'
	option type 'mac80211'
	option path 'platform/soc/soc:internal-regs/f10d8000.sdhci/mmc_host/mmc0/mmc0:0001/mmc0:0001:1'
	option hwmode '11g'
	option htmode 'HT20'
	option channel '11'
	option country 'FR'

config wifi-iface 'acuario_iot'
	option device 'radio2'
	option network 'iot'
	option mode 'ap'
	option ssid 'acuario_iot'
	option encryption 'psk-mixed+aes'
	option key '********'
	option ifname 'wlan_iot'