Yes, unless you have a red herring in your network, you will get far better, consistent and higher performance using wire over wifi.
This will always be true. Wifi will never, due to science, be faster than wires if you have an apples to apples comparison of the contemporary standards for both.
The DETAILS on the other hand, that's the devil.
Long story short, never use wifi if you have a reasonable/tolerable option of using a cable. Not only will that link be faster and more consistent, it will also free up your wifi bandwidth for devices that need it.