On the (fortunately rare) occasions when my mesh Wi-Fi network goes down this plays havoc with my Wi-Fi connected Tuya devices. As the system resets, the Tuya devices often latch on the first part of the network that comes back online, even if the signal is stupidly low. Even when the mesh is rebuilt, the Tuya devices stubbornly remain connected to the distant weak source, and so frequently don’t work particularly well. I have devices positioned next to a mesh extender that if connected when the Wi-Fi is fully operational will record signal strengths of -40db (which is strong). But after a network outage they can latch on to a distant weak part of the network and show signal strengths of -85dB (extremely low), even after the nearby mesh extender finally comes back on line. Annoyingly, even switching them off and back on again has no effect as they seem to remember the source they last connected to.
As this happens with a variety of devices it seems an inbuilt design flaw for Wi-Fi-connected Tuya devices. The only way I can find to fix things is to remove the device from Smart Life and reconnect, which then finds the strongest signal, but this is incredibly inconvenient. As far as I’m aware there is no way to reset the devices remotely, or to force them to reconnect to a stronger Wi-Fi signal (as this is a mesh network, there is a single SSID).