Nighthawk Mesh MK62 Dropping Internet Connection

btreu 's suggestion of resetting NVRAM and PRAM helped and made a very noticeable difference. But it wasn't perfect, I'd still notice it drop a few times in a week. But that's still better than dropping once every few minutes! 

I found a solution that seems to work even better than that.

I used the manufacturer warranty to get an exchange. That said, I wasted countless hours dealing with technical support.

In hindsight, the most ideal situation: buy it from a retailer / reseller with a generous return policy (NOT BEST BUY). Within that return window, make sure you open it up and confirm that it works. If it doesn't work, return it immediately to the retailer and get something else.

RMA horror story:

I ended up shipping back the router and satellite, and they literally shipped me back a router, but NO satellite. I had to call (let's say I made it clear was very VERY UNHAPPY about it), and they blamed it on their warehouse team (whatever, I don't care! Not my problem, just fix it!) Even worse, they asked me what was the serial number of the satellite I returned to them? WELL--I didn't know I had to record the serial number of the satellite. I had the shipping tracking # so I know it arrived. Lesson learned: save all your serial numbers.

You will waste a ton of time with customer service because they're always asking you for your case number (serial numbers, name, email, phone, all the information that they basically already have!), closing and opening new case numbers (even though it's a same case--which I suspect is to make their customer service metrics look better, as if they're actually solving more problems). You'll be on hold as they pass you from department to department. They'll give you a case number, and then ask you back to repeat the same case number, a few minutes later. Why?

As their customer service is in India, your phone call will also like drop a few times likely because of their bad VoIP implementation (irony for a networking company?)