Exactly, charging 80-100 is much slower than 0-80.

The Hyundai Ioniq 5 and Kia EV6 both currently advertise charging from 10%-80% in 18 minutes (under ideal conditions). Charging from 10%-100% takes around 50 minutes (under ideal conditions).

So 10%-80% in 18 minutes, and 80%-100% in 32 minutes. So if you need to go far, it's also quicker to charge to 80%, go as far as you can and then charge to 80% again.

It's also important to note that charging to 100% puts much more wear and strain on the battery, so if you want your battery to keep it's capacity for many years, you should avoid charging beyond 80.