Also, there is the StarTech card....ST10GSPEXNB
RJ45 card:
https://www.newegg.com/Product/Product.aspx?Item=N82E16833114165 (~$250 US)
Mac Driver can be found below.....it has a Tehuti controller, and it has a Mac driver......the listing on Newegg says this card has an Aquantia chip on it. I wonder if the driver could be used for the Asus Aquantia?
As for me, I might just skip 10.13.4 altogether, or until a fix can be found for the Aquantia card.....I just don't need to follow each and every bump that Apple puts together for their MacOS.....I can wait, and I probably will.