Well, the update was uneventful and the new software is installed. On the router side, in my case i changed the wireless mode from 1300 down to 600, and kept the preamble short.
Miraculous!!!!!!
changing the wireless mode down to 600 enabled ALL my 5ghz clients to connect reliably and hold connection with incredible speed. I am now getting close to my ISP speed of 15/1 over the wireless.
Played BF4 last nite, for the 1st time with no lag and great multiplay gaming.