Sporadic Rotating Loss of Internet Connection for Just Some Devices

Hi,
We've been having a problem where one or two of our devices (phones, laptops, iPads, Apple TV) lose internet connection for 10-30 sec at a time, while the others are fine.
As best as I can tell it's a full loss of connection, not just something running very slowly due to us pushing the bandwidth limits. I've experienced the latter elsewhere and this manifests very differently. It will instantly and fully disconnect a person from an online game or drop a skype call without the accompanying prolonged lag or distortion of bottlenecked bandwidth.
It happens at all times of day, and does not seem related to our peak times of bandwidth usage, nor the general public's peak times of usage.
We should have enough bandwidh for our usage, and usually we do. Our system is 25/25 Mbps and during our peak use at most we would probably have 1 laptop gaming, 1 HD video stream, and 2 non-HD streams. However, like I said before, the problem seems unrelated to overall bandwidth usage. The same problem occurs even at midnight when our local usage is minimal.
Overall we have 6 laptops, 5 phones, an iPad, 2 microcell signal boosters, and Apple TV, in total connected to the FiOS. We have a property with tenants where the signal is distributed via 3 WiFi routers and one direct ethernet cable to my laptop, and one to the Apple TV.
It happens on devices that are both connected through the WiFi (wife's laptop, phones, iPad) and ethernet (my laptop, Apple TV). It can happen with devices that are a few unobstructed feet from the WiFi router. However, it anecdotely seems to happen more on our phones than laptops.
My hunch is it is something outside our local network. This is because our equipment and usage has basically remained unchanged over the last couple months. (We got one new microcell tower for a different carrier, one new wifi router, but overall same # of people and patterns of usage.) And yet the problem seems to be getting worse. Back in probably early November I don't remember this problem occuring at all.
My second best guess is there are more devices connected to the network than it can handle simultaneously, and it rotates which gets kicked off. Maybe this was occuring before but we didnt realize it.
My third guess is it has to due with signal interference with the various WiFi routers and microcell boosters. However, this seems less likely since it also affects devices connected via ethernet cables.
Any thoughts or advice is much appreciated! Thanks!
-Ned

Ok, so in the mean time we decided to upgrade our service so I've only tried this solution now.
My problem though now is I can log into 192.168.1.1, then give my verizon admin password, and then set my channel preference. That seems fine for changing the main network input and wifi router (call it A).
However, we have another wifi router (call it B) which is fed from A via a cable. I cannot figure out how to change B's wifi channel. Therefore I worry if we have only switched A, since A feeds B (as well as the 2 microcells) they will all still be on the same channel and therefore still interfering with each other.
I have tried www.routerlogin.net (and .com) as written on my netgear router and I get "http://searchassist.verizon.com/" telling me "Sorry, We could not find www.routerlogin.net". I have also tried logging into wifi router B via all the 192.168.1.X addresses I see listed on the Verzion account when I log in via 192.168.1.1 (in total I tried all the 192.168.1.[1-24] options).
Thanks for the help!

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Please call our technical support at 800 474 6836. If you live outside the US/Canada Region, please click the link below to get a support number for your region.
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Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
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Sporadic Rotating Loss of Internet Connection for Just Some Devices

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