I know because I am awake each night when it cuts off; night owl here, haha.
My ISP is Xfinity, and I do have additional access points, but neither of them work. I think the modem is “xFi”? My account says it’s from “ARRIS Group” and is a “Voice and Data Modem”.
I’ve since learned that it’s not just my PS5 but ALL my gaming consoles that lose connection together. So I’d doubt my Nintendo Switch and PS5 are going into update mode at the exact same time every night, but who knows. I would think my PS5 would give me a notification for it if it was.
The DHCP lease time is 48 hours I believe. Ironically the timestamp is around 2am for when the the lease is obtained and when it expires. I’ll lose connection at exactly 2am on the dot every single night though.
Stranger and stranger.
I am not sure it is a DHCP issue as it would have tried to renew the DHCP lease before the 48 hours is up. If it doesn't get one on the first try, then it will keep having a go at doing so and not just release the IP address and leave you with no connection.
To be clear it was the access point\router that was doing an update at that time rather than individual devices so they just saw it as a loss of connection.
Agree with
@TheHighFlyingBirds that it is more likely to be a router\ISP issue or an issue with your network configuration.
What's somewhat concerning is that even with a manual IP address the PS5 does not work.
You should only need to set, the IP address, the subnet mask, gateway and DNS server. If that does not work then something is up
It should be along the lines of 192.168.0.20, 255.255.255.0, 192.168.0.1 and use Google 8.8.8.8
That assumes your router is on the 192.168.0.x network with an IP of 192.168.0.1 itself. You would need to check what these are.
Also are the additional access points plugged in as they could possibly interfere.
A possible cause could be if there is a 2am maintenance reset\blip of the router. Then the PS5 would try and connect to another available access point, as they are not working correctly it would get a network connection but no way of obtaining an IP address. It would not reconnect to the normal router without a restart of the PS5.