2019 and onwards got much faster CPUs. I was aware of people complaining about the speed and laginess of the interface on the models before then, but it's not been a problem in my experience, everything is pretty responsive.
Ah right that might be it then. The older models definitely had issues, to the point where you weren't sure if it had actually registered the press or if it was just being slow. The worst of it was the inconsistency, it would sometimes be responsive, and most of the time not. Glad to hear the 2020 models seem better!
