I have a 2011 Mac mini connected to my 2008 iMac via Ethernet cable. The Mac mini is configured to accept remote management sessions, but the problem is when the Mac mini's AirPort is turned on, the remote management software defaults to the Wi-Fi connection versus the Ethernet connection, resulting in a much slower refresh rate. Is there any way to force the remote management software to use the Ethernet connection versus the Wi-Fi connection?
The default is as per Interface "Service Order" for any connection on your iMac
UNLESS - the connection in the software was made prior to the Ethernet cable being connected, in which case it will stay WiFi, until you restart software, or disconnect WiFi, and the app has to connect again.
Head to the Network, under System Preferences, and set your 'Service Order' accordingly.