Poor Video Connection

Hi I have had a ring doorbell v1 for a while at work and its always been perfect, I can live view video via rapid ring and ring apps almost instantly. I decided as it was so good to purchase one for home use, so purchased and installed a doorbell v2 model. The FW is completly up to date, battery fully charged etc. However i initially noticed that when trying to live view via either app it more often than not, does not show the video and flicks between starting live view, establishing connection and its completly hit and miss, sometimes it doesnt work at all. I thought maybe a poor wifi connection, so have placed a wifi repeater behind the door its mounted to, I ironically have a lower rssi on the home bell of approx 50 than I do on the bell at work, yet have constant issues with viewing video on home bell. I have speed tested original wifi connection at front door, and then again with the replacement wifi and even tried using a different SSID and channel. Average but stable speed are between 20-40 Mbps. I have tried everything I can to rectifiy this issue and fail to understand why the workhop bell has a higher rssi (worse connection) is further away from the router and works perfectly, yet the home bell (v2) seems to struggle. Any advice much appreciated as getting ready to just take it down and choose another brand Thanks in advance guys and girls