I am mostly happy with my four Wyze Cam, all v.2, but one of them consistently loses contact with my Xfinity modem/router and requires a power reset. What’s even more strange is that this cam is the one closest to the router. Could this one cam be a lemon?
Switch it out with another V2 that you have and see if problem stays with camera or the camera nearest the router.
Lots of things to try… Change power supply, change cable, set up DHCP address reservation, move the camera and see if it improves, check if other devices are interfering…