Lagless vs screen mirroring
Updated 2026-10-06
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Screen mirroring sends audio together with video, which users report keeps them in sync, but it needs a mirroring target such as an Apple TV and mirrors your screen. Lagless lowers the delay for system audio to any AirPlay speaker, with no display involved, to about a third of a second.
Side by side
| Screen mirroring | Lagless | |
|---|---|---|
| Needs | An Apple TV or AirPlay display | Any AirPlay speaker |
| Audio delay | Reported in sync with mirrored video | 350 ms |
| Affects | Your screen too | Only audio |
| Good for | Watching on a TV | Speakers at your desk |
A MacRumors user describes mirroring as sending audio alongside the video without the usual delay.
Which to choose
- Watching on a TV with an Apple TV: mirroring or the app's own AirPlay button.
- HomePod or another speaker at your desk: lowering the buffer, which is what Lagless does.