Ring3 instantly booting and constantly switching between 2.4/5.0 gHz

My new Ring 3 doorbell operated well for 5 weeks but now in 3 days time I noticed 2 times that it ran stuck. A blinking full circle blue light on 1 second and of 1 second telling me that is stuck in booting. This happened instantly. So not somebody pushing the button or triggered by movement around the Ring. Taking the battery out, wait 1minute and put it back again did resolve it but after 3 days again the same issue. occurred. What is causing this instant booting. My doorbell is also hardwired, battery level ok 95% and recharging every time to 100% once the level drops below 90%. Is this repeating booting issue caused by a recent firmware update or whatever reason can cause it?Further, from the start I installed the Ring I noticed that the Ring is switching between 2.4 and 5 Ghz WiFi vice versa. Ring is about 2 meter from my WiFi router. Always showing good RSI value on 2.4 but Ring itself occasionally switches over to 5 gHz which then shows then poor RSI (-71) value after some time and triggering to switch back to 2.4 gHz. I tested with WifI analyzer that at the spot of the Ring both 2.4 and 5.0 gHz shows a very good signal RSI value. My smartphones have good RSI on 5 gHz both inside and around my house. My WiFi is mesh with same SSID name for 2.4 and 5.0 gHz and I cannot change that as then mesh will not work anymore. Is there a way to force the Ring in its setup to only connect to 2.4 gHz or disable 5gHz.? In my wifi router I cannot force the Ring to connect to fixed 2.4 or 5.0 gHz.