Yes, you can disable NordLynx from being automatically chosen as your VPN protocol by editing your NordVPN app settings. Here is a quick step-by-step guide to disabling the protocol:
Open “Settings” in the NordVPN app.
In the “Auto-connect” menu, make sure “Always when the app launches” is turned OFF.
“Auto-connect on WiFi” should be OFF.
“Choose a VPN protocol and server automatically” should be OFF.
In “VPN Protocol” choose “OpenVPN UDP Recommended”.
Click “Trust this network” next to your local WiFi network.
Once you’ve adjusted these settings, NordLynx won’t be activated unless you enable it again in the “VPN Protocol” settings.