Also, explicit confirmation of your customizations and of your order. You can double check yourself to make sure it's all correct before submitting the order while the distracted and overworked employee at the counter could hit the wrong button or skip a customization and you often wouldn't know until you receive the wrong item. Then you have to create more work for the workers to get your order remade.

This is why I tend to just use the mobile apps for places to order. Not laggy and gives the benefits you mentioned of using a touch screen kiosk. A lot of them you don't even need an account to use the app which is nice if that's something that bothers you.

They just display a tiny bit of text and images, they should switch between screens at 60fps, not 2s per click.

I think this is intentional. They want you to take time looking at the pictures so you might think "you know what, actually I'd like some of those fries as well" by making it hard to just quickly select what you want and leave.

I wouldn't even be surprised if there's a psychological effect where you feel like ordering more makes this tedious ordering process more worthy. I mean why go through 2 minutes of clicking and waiting just for one stupid cheeseburger.

I find this a bit odd as you make it seem as if ordering is a complicated process that takes some thought and planning. The whole draw of McDonalds is that you get the exact same food wherever you may be and their options are fairly limited. Ham/cheeseburger, chicken burger, fish sandwich, or nuggets is pretty much your array of options.

I personally dislike the ordering screens as they make the process way to drawn out. Let me just pick a #1, the size, and the drink and be done with it in 3 taps. Last time I used one, it wanted me to basically build my own meal as if I was ordering Dominoes online and building my own pizza.