I have ASUS ROG gaming laptop with Intel wifi, I recently bought a 5ghz router and all my other devices including Android & Windows 10 easily connect to it at full speed but this device does not even find it in the wifi list. I have already updated all the drivers using the Intel DSA and I still have the same issue.
My problem was SOLVED by searching online.
SOLUTION: In Windows 10 WIFI option there is a "Hidden Network" option all the way in the bottom of the list of wifi connections. I manually entered the name of my 5G wifi and it finally found the connection and I connected to it.