ac86u connection drop

I've been having some issues with video calls, zoom in particular. Generally, I want to optimize my network as much as possible. I have a XFinity XFi gateway (XB7) that I've set into Bridge mode (so it's just a modem). I pay for a gig connection, and by using their modem, I get unlimited data...

Hello everyone, I really hope you can help me with my issue. I'm trying to solve it for more than 3 weeks now. So, I recently purchased 2 AC86U routers. One of them is in the livingroom as the main router, the other is on the first floor as the node router. They are connected with a cable...