X60 disconnection randomly even though they are connected over connected networks
My network diagram is shown below. It's a complete 1G network via a managed network switch. I have to keep the main router to isolate home traffic from office traffic. Hence Router mentioned below can't be replaced. I have around 25 devices connected on average all the time. These include 3 Windows PC (2 Lenovo and 1 Dell), few other devices and mobile devices.
The problem: While we are watching TV shows using google chromecast (connected to 1st floor X60 deco), it will pause for around 30-60 seconds and then it will resume back. At that time, the X60 deco LED stays green. If I look at the deco app, it says both remote deco disconnected for a while and comes back after some time. Please let me know if you need any additional info.
Would you please help me fix the issue?