Autocomplete Latency Tester

Adjust the latency slider and type to feel the difference

Simulated Latency

150ms Fast

0ms 200ms 400ms 600ms 800ms

Last search completed in 0ms

UX Research Notes

<100ms — Feels instant, ideal for autocomplete
100-200ms — Acceptable, most users won't notice
200-300ms — Perceptible lag, still usable
>300ms — Frustrating, users may stop typing to wait