This is almost certainly an MTU problem.. so let's start.. typical case is that you are using PPPoe.. is that the case? reduce the MTU to 1452 and try again. also make sure the firewall "drop...

I am one of the users that is not experiencing the DHCP issues but wants to know what exactly is special about the affected setups.

@JoeR Just disable "block large ping attack".. As most of the firewall tickboxes it is an anacronic non problem. This is legitimate ICMP traffic.. see..the attack it is supposed to protect you from...

@laurentiu907 Unfortunately the controller's design and (maybe) the device's software is not very good for this APs. APs with > 1 wired access ports should IMHO have their wired ports shown as a...

@lesniki45 forget about it, 2.4ghz frecuency is crowded beyond belief and there may be tons of reasons it is overloaded, it is not just legacy wifi devices..literally every single old wireless device...

@dononeil according to the internet your device maximum power on 5ghz is 25dbm