Well if it's this Macbook Air here
https://everymac.com/systems/apple/macb ... specs.htmlIt's Intel HD4000 integrated graphics, and the driver you get is dependant on which version of macOS you are on - there are no downloadable/updateable drivers for macOS & intel graphics. In fact for all macOS later than High Sierra, there is no way to update even Nvidia drivers as Apple is refusing to sign them.
So you can disable antialiasing (it does sounds like a driver bug), and I don't think there's much you can do about the driver other than making sure your OS is up to date
FG does run on Catalina, but only on the nightlies, or if you compile it yourself