If it were me, I'd be livid, but I'd bite the bullet and get a really good ASUS
or Netgear 802.11ac router and run it in Access Point mode and attach it to a
port on the Verizon router. I'd specify separate SSIDs for 5 and 2.4GHz and
connect my SP3 to the new 5 GHz SSID.
the MI424WR-GEN3I is ancient in router years. Verizon will sell you a better
FIOS router for $75-$100 but you are better off with your own device.
I DO realize that the issue is with the SP3. But absent a fix from Microsoft and
the lack of specific comments on this specific issue from Microsoft, I'd
probably spend the money. This isn't a real answer to the lack of
attention/fixes, but it is the only thing I can suggest.
I can personally vouch for the Netgear R7000 and the ASUS RT-AC68U. There are
some cheaper routers that can be run in AP mode that may work ok, but I don't
have personal experience with them.
__________________________________________________________________________________________________
Barb
Windows Entertainment and Connected Home MVP
My Blog - http://digitalmediaphile.com/
Please mark as answered if this answers your question
Agree!
I have the ASUS RT-AC68U, and the problem is identical whether I am connected to my 5GZ or 2Ghz networks.