I found my connection problem on Wi-fi and it's not related to the router, but rather of what I use in Ubuntu: "kernel: wlp0s20f3: Limiting TX power to 40 (40 - 0) dBm as advertised by...

@Kevin_Z I've added the recommended setting and I will see this week how it behaves. Thanks

I have this router for a few weeks and it has a strange behavior using the latest firmware. I have 12 devices, 10 are on 2.4GHz, 1 wired (TV) and 1 on 5GHz. I work on my laptop using the 5GHz band...