Netgear R7000 not getting full internet speed

While you evaluate all the other good advice here, you should also carefully read the fine print of the service offered by your Internet Service Provider.  It's possible that their fastest advertised speed *might* only be available via a hardware based accelerator that runs only on the wifi router they provided, and via a wired connection.  For example, that's the case with my Spectrum service.  I forget what it's called, but the fasted available speed only happens when connected to my Spectrum provided router.