I remember the exact opposite of the McDonalds touch screen ordering systems.

When they first came out, everything was snappy because it wasn't loading recommendations or additional tracking. There were a lot fewer customization options.

Now, you click on something, and you wait a while, and then it asks you what you want to change and if you want to add these other suggested items. When you want to check out, it lags and then pops up another dialog asking if you want to add more items to your order.