No idea about the Ioniq but on the Tiguan I currently have, you can set the warning noise to wait until you’re further above the limit – I have mine set at the max 12mph over purely because it seems to be based on GPS not sign recognition and there are a boatload of 70mph roads around here which the GPS thinks are 60’s.
I’m NOT a speeder, drive pretty much everywhere with the adaptive cruise set AT the speed limit so it was driving me batty – still happens sometimes when it thinks a 30 is a 10 (no idea how that happens) but it’s a LOT less common set at 12 over
"Man is born in freedom, but he soon becomes a slave, in cages of convention, from the cradle, to the grave."