@Shaul,

Hmm, I cannot think of anything in particular that would provide an immediate fix for this since it could be caused by so many factors. Here are a few things you could experiment with to see if it will help:

You may consider setting an ARP Binding or IP-MAC Binding for your TV. This may help by simply providing the TV with the same IP each time it connects.

Consider attempting to toggle the setting for TWT in your router settings, as this is the setting that deals with 'asleep' connections - however the battery life of wi-fi devices may decrease with TWT turned off.

Lastly, you may consider disabling Smart Connect and using the same network name for both the 2.4 GHz and 5GHz network. You may even consider troubleshooting with different names to see if the behavior happens when connecting to a specific band each time.