How to get Mac to give Ethernet connection priority? [duplicate]

I have the following issues / question. I use WIFI and Ethernet through each other like most people probably.

Certain things like ripping a blu ray I want to do through the Ethernet connection so that is when I plug it on.

However, I first have to turn WIFI off to "force" the mac to choose to route the data through the Ethernet connection.

In system settings under network / priorities I have the proper order, so Thunderbolt Ethernet above WIFI.

Any idea how I can make the Mac use the Ethernet cable without turning off the WIFI? THANKS!

According to Apple Support:

1. Choose Apple menu > System Preferences, then click Network.
2. Click the Action pop-up menu , then choose Set Service Order.
3. Drag a service, such as Ethernet, to the top of the list.
4. Click OK, then click Apply to make the new settings active.

Full article is here.