I can confirm the same thing happened with my Cam V3 on beta firmware 4.36.14.2259. I seem to be able to recreate this issue consistently now. AFAIK, this issue will show itself whenever you reboot your router. In group view after 15 seconds, it will constantly reconnect itself until I finally get an “Error -20006”. The issue is sort of resolved by power cycling the cameras, but whenever your router reboots then it will start exhibiting the same issue again until you power cycle your cameras.
Setting the cameras to static IP didn’t resolve the issue either. I have another spare Cam V3 on the stable firmware 4.36.13.0416 which doesn’t seem to have this issue.
Anyhow, it looks like Wyze paused the roll out of beta firmware 4.36.14.2259 since I can no longer update to it on one of my spare Cam V3.