Nighthawk C7000V2 Connection issues

Thanks for the input.  Just getting back to this.

Firmware:

• C7000V2 1.02.09
• EX8000   1.0.1.232

The issue has been occurring for several months which is as long as I had the configuration set up.  The C7000V2 is an old modem/router, but a new device to this environment.  I previously had a different router/modem with the EX8000s, which was a rental from the ISP, and had no issues like this when using it.

I have one common SSID for both bands so its a little hard to tell which band the device is trying to connect to, but from doing some analysis I think I have seen it occur with both bands.  I have now enabled the guest network with separate SSID's for each band so that it is easy to selectively pick a band.

It would be great if you confirm that my understanding of the limit on connected devices is correct.  That is the limit is 32 devices per band. I assume that the limit is a combined limit for the primary network and the guest network.  Is that correct?  

With regards to shutting off the EX8000's, while on the surface that would seem like a straight-forward test, unfortunately shutting off the EX8000s for a long period is not possible as I have several devices which are too far away to connect to the router and rely on the mesh adapter for connectivity.  If I shut off the EX8000 adapters those devices will not have connectivity and it will also reduces the number of devices on the network by several devices and alll indicatations are that is related to the problem.

Any additional input you or others have would be much appreciated.  I'm thinking I should get a modem/router that supports more connections, but I would prefer to know root cause before for going down that path.

Thanks.

Ken