My experience with them to this day is still abysmal... often have to touch 2 or 3 times to get it to register and there is still a noticeable delay, as if I'm (probably so) interacting with a slow/bloated webpage. The mobile app is even worse for me with added latency and surprising(ly delayed) large content changes that affect what you're trying to click on.

Here in Singapore the terminals work well! The latency has definitely gone down. Ironically the Japanese McDonald's website loads faster than the Singapore one... so they've got some work to do.

They probably never wash them so there is this insulating layer of grease and grime on the screen that inhibits touch detection.