As a user forced to use many apps and websites with a terrible user experience, I conclude that you can certainly have well-communicated loading times without m

As a user forced to use many apps and websites with a terrible user experience, I conclude that you can certainly have well-communicated loading times without me hating the product. However, I will always avoid - if I can - using a product where the UI itself is slow, sluggish or bad. This includes many modern websites and also quite a few apps. Responsiveness is the key. If I click on something, then something needs to happen. People can deal with a loading bar, but everyone gets terribly confused and / or annoyed by a sluggish drop-down menus, buttons that seem to fire only after a couple of seconds, or, my favorite, a scrolling action that is either sluggish or leads to load processes that interrupt itself.