r7800 router wifi horrible

Hello Netgear community,

I went against my own suggestions and purchased a Netgear router (r7800 x4s ac2600). At first (for a few moths) it worked great; I was getting good throughput on both 2.4ghz and 5ghz, then things started going down hill and now I am almost ready to can this thing. I am now getting 24d/18u on 5ghz and 17d/17u on 2.4ghz and my 5ghz constantly dropps and reconnects. The router (hardwired) gets a constant 595(+/- a bit)/18(+/- a bit). My ISP speed is 600/20. The router has never been configured for anything outside the box default with the exception of the normal admin account and SSID setup. I am about done with this thing and will be more than happy to give it it's appropriate rating of 1 star with notes....

Things I have attempted already:

- I have changed physical locations throughout the house: no change or worst

- upgraded and downgraded firmware: no change

- turned MU-MIMO off and on: no change

- turned QoS off and on: no change or worst

- changed the Preamble Mode: no change

- checked the channels for optimization with a wifi analyzer: channels optimized, no change

- enabled and desabled Smart Connect: worst, 5ghz continuously bounced

- changed the 20/40 MHz Coexistence (enabled/disabled) - no change

- changed 5ghz mode to use up to 800mbps instead of 1733 to try and stabilize my 5ghz drop issue: stabilized for a bit longer, still drops just not as frequent. Throughput did not improve.

- I have tested the wireless speeds using different devices at different distances, from being 5 feet away to being in other rooms and levels. On the good side, during my distance testing, the speeds were consistent, horrible but consistent.

I have not tried to remove all but the testing device off of the network, however; I do not think I should have to...

Obviously because this is a home product, ther is no CLI for it and I coud not really troubleshoot it any further. Am I missing something here or do I have a dud router? I would hate to rate this thing and give my full bashing rant if I am missing something. Anyone have any ideas?