By default, if WiFi drops the deck will reboot after 10 minutes. The timeout is configured via the reboot_timeout: duration, under wifi, in the ESPHome code. It might be worth extending this timeout to something much longer. If WiFi is the cause of your issue, extending the timeout won’t fix the problem but will allow you to progress the diagnoses. If WiFi drops the LocalDeck will stop responding, and you can then have time to try pinging it from HA to see if the LocalDeck is accessible. If it isn’t pingable, the issue points to network issues, possibly WiFi signal or interference, if you can still ping the LocalDeck you can see if you can access the live logging via ESPHome, which might help.