BTW, @Mariano_Colmenarejo is one of the community members who has been writing new Edge Drivers, so definitely an expert on their current practical use. 
His channel includes an Edge Driver for the Sonoff ZBMini , so if he says it’s not working well, he would definitely know.
[Beta] Zigbee Edge Driver compatible with Lidl, Ecosmart, Osram, SmartThings & Others
Whether that’s going to be a permanent issue with that model or whether the problems are because Edge is still in beta is something we won’t know for awhile.