[PPRAANet] Network advice/question

[Dennis N0ABC]

Long story, but I'll try to shorten it.

Had DSL for years. Was running 40Mbps for years until several years ago 
when I upgraded to 80Mbps. Somewhere in past 10 years I upgraded to a 
Netgear NightHawk R7400 router so as to never use the DSL WiFi router again.

For a couple years, I've been vowing to drop the landline, and since 
fiber has been available for close to a year now, I was getting ever 
closer to doing that. Just before end of December I decided to take the 
plunge (and purge of landline) with Quantum's 940 Mbps option.

I hadn't reviewed my existing infrastructure beforehand, so I had to do 
some troubleshooting. Fortunately, almost all of my existing cabling is 
at least cat 5E, so I'm good there. I had to replace several ethernet 
switches which were only 100Mbps. BUT, I am finding that my NightHawk 
R7400 router just can't handle the 940 Mbps (tests at 950) out of the 
fiber modem. The router LAN ethernet ports consistently show only about 
550-600 Mbps with the 940 input.

So, my questions are:

1) Can anyone confirm that the R7400 just isn't up the task?

2) Do I need to upgrade to a WiFi 6 router?

3) What is recommended by any of you network mavens for such a router?

4) I've had pretty good coverage with the sole router, but should I 
consider mesh? *

5) If mesh, what's a good one while keeping cost down?

* 2390 sq ft, 3 levels - main, upper, basement

Thanks much in advance!

73

Dennis
N0ABC