@Solla-topee Thanks for the reply.  After a bit more time has past, I have narrowed it down a bit more now.

So, with Rogers modem I still have bridge mode off, wifi off, and DHCP off.  Archer A9 is handling all the DHCP, wifi etc.

All other peripherals I have that connect to A9, are working fine, except 2 Windows 10 laptops.  Seems now they will show up with "No Internet, secured" showing for any of the Archers AP's.  I can power cycle the router, and then it will come back.  At the time, my kids migth be playing PS4 which is hard wired into the Archer.  

To answer your other question, no I didn't factory reset after updating the firmware.  Is it too late to still do that?

2G or 5G, they both have the same problem.

I have to work in a remote room away from the router.  I can get a solid connection without problems over LAN to A9, its seems to be just the wireless problems on Windows 10.  This is a Dell laptop Latitude E5570.

At any given time during the day,  one kid might be streaming youtube, another maybe on netflix.  At another time, someone might be on the PS4 gaming.  Rare to have them all doing that at once.  Just odd that only Windows 10 is showing the problems. (so renamed the title of this post).

Let me know if you have any other tips/tricks that might help.