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Question

Does deliberately slowing down an interface change how forgiving people are of real-world lag?

Hypothesis

Designers who feel real latency make better decisions about loading states than those who only imagine it.

What it is

A wrapper that artificially delays any interaction by a chosen amount, used to test how interfaces feel under real network conditions before shipping.

Try it

Pick a delay and click through a sample interface to feel it at that speed.

Result

Interfaces that felt fine at zero latency often needed a loading state added once even 400ms of delay was introduced.

What I learned

Build the slow-network version before deciding a loading state is unnecessary.