Lets say that one of your other devices is causing an issue with the WIFI. By changing the SSID, it will not connect as only devices that use the new SSID will connect. If you connect your iPad using...

@pkz78 I am assuming durring this time the wired connections still perform at the rated speeds. Next I would try changing the 5GHz SSID and password and connect only one device at a time and test to...

@pkz78 Some things I would try... On the router setings try different channels and band width. Power down any extenders, boosters, if any in your system. On the iPad, delete (forget) the network and...

Try replacing the Ethernet cables with new quality ones. Also, if you can, try a different PC for testing to see if you get the same results as your computer hardware/driver may be the issue. If...

On your MAC, go to system preferences, network, WIFI, advanced, and set the preferred order of your WIFI connections.

@AshishA Looking at the specs for the Archer C60, I do not understand how the WAN port speed is 10/100 but the wireless WIFI can be rated highter (450/865). It seems to me that the WAN port of 10/100...