I disable the NIC in my PC when I run Sonar. I've had clicks and dropouts with the NIC connected. Thus using a wi-fi connected controller is out for me. However, I have a Frontier Tranzport that I still use, so I have a wireless controller if needed. I don't use the Tranzport as much as I used to as it interferes with my Behringer X-Touch wired control surface
in Sonar only (works OK in other DAWS). Something in the Win 10 Fall Creator's Upgrade (Fall 2017) caused the Sonar problem. Before that the Tranzport and X-Touch co-existed without problems in Sonar. Our forum control surface guru, Azslow, confirmed its the way Sonar handles the devices.