Lagging issue when screen mirroring from iPhone SE to MacBook Air

Question

Lagging issue when screen mirroring from iPhone SE to MacBook Air

I use an iPhone SE 2nd gen, with a m4 macbook air, and whenever i use the mirroring it lags like crazy, even like safari so i have to reach my phone to actually use it smoothly, my house wifi is 5ghz

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Original Title: Screen Mirroring lags a lot

iPhone SE

Posted on Jul 19, 2025 12:28 PM

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Answer 1

Jul 22, 2025 11:49 PM in response to justanormalmacuser

Being connected to Wi-Fi ≠ Having fast internet, or strong network speed.

Your iPhone might show “connected to Wi-Fi,” but that doesn’t guarantee:

A strong signal (check bars ≠ check speed),
Low latency,
Or any internet at all!

If the router is overloaded, placed far away, or has poor backhaul (like a weak broadband uplink), screen mirroring performance will tank — even on 5GHz.

Try tools like Speedtest on both Mac and iPhone to verify actual throughput. Also check for:

High ping times (>30ms locally = bad for mirroring),
Packet loss,
Bufferbloat (especially under load).

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