I tried it with 2 minutes, unfortunately the downtime is between an average of 1 minute and a maximum of 2 minutes. That is far too long, can’t you set the lease time lower?
I have noticed strange behavior and that in the original state.
Status>Network>LAN
The least time always counts from 1m:58s - 1m and then starts again at 1m:58s
I have now adjusted the parameters as described and the uci set dhcp.lan.leasetime=15s as well.
But nothing has changed under Status>Network>LAN.
Yes, it appears that the lease time is capped at a minimum of 2 minutes, regardless of any changes made in the configuration files. I will investigate further, but I cannot guarantee that it will be possible to adjust this setting.