Display is very slow/laggy on startup, unlike linked devices — wasn’t an issue before

[Tjoy01]

Describe the bug

When I start scrcpy, the screen display is very slow and laggy, almost like a low FPS stream. However, the linked device itself responds normally — there’s no lag or delay on the actual phone/tablet. It used to work perfectly before, with smooth real-time mirroring, but something seems to have changed and I noticed that the fps counter is getting skipped

To Reproduce

Steps to reproduce the behavior:

1. Connect Android device via USB
2. Run scrcpy
3. Observe that the mirrored display is very choppy/slow

Expected behavior

The mirrored display should be smooth and responsive as it was before.

System Info

• OS: [, Windows 10]
• scrcpy version: [Run scrcpy --3.2]
• Android device: [Vivo Y1s/2015 + Android 10]
• Connection method: USB (not wireless)

Additional context

• This issue started recently. It used to work just fine with no lag.
• The phone itself is responsive and doesn’t appear to be overloaded.
• Tried different cables and ports, same result.
• This seems to be affecting only the scrcpy mirror, not the device.

Please let me know what additional logs or info I can provide to help debug this!

Thanks for your work on this amazing tool 🙌

[rom1v]

Try rebooting your device.

If you record (--record=file.mp4), how is the recorded file? Is it laggy?

I noticed that the fps counter is getting skipped

Please post an excerpt of the FPS counter output.

[Tjoy01]

I rebooted the device. it till laggy in the cast

Here is a fps counter output that i recorded:
INFO: 8 fps (+1 frames skipped)
INFO: 12 fps
INFO: 10 fps
INFO: 9 fps
INFO: 10 fps
INFO: 9 fps
INFO: 12 fps
INFO: 10 fps
INFO: 9 fps
INFO: 10 fps
INFO: 10 fps
INFO: 9 fps
INFO: 12 fps
INFO: 9 fps
INFO: 11 fps
INFO: 9 fps
INFO: 7 fps
INFO: 12 fps (+2 frames skipped)
INFO: 10 fps
INFO: 10 fps
INFO: 10 fps
INFO: 6 fps (+1 frames skipped)
INFO: 11 fps (+2 frames skipped)
INFO: 10 fps
INFO: 10 fps
INFO: 10 fps
INFO: 6 fps
INFO: 13 fps (+1 frames skipped)
INFO: 10 fps
INFO: 10 fps
INFO: 10 fps
INFO: 8 fps
INFO: 12 fps
INFO: 11 fps
INFO: 10 fps
INFO: 10 fps
INFO: 8 fps
INFO: 12 fps
INFO: 10 fps
INFO: 10 fps
INFO: 10 fps
INFO: 9 fps
INFO: 9 fps
INFO: 11 fps (+1 frames skipped)
INFO: 10 fps
INFO: 10 fps
INFO: 8 fps
INFO: 12 fps
INFO: 10 fps
INFO: 10 fps
INFO: 10 fps
INFO: 9 fps
INFO: 11 fps
INFO: 10 fps
INFO: 10 fps
INFO: 10 fps
INFO: 8 fps
INFO: 12 fps
INFO: 10 fps
INFO: 10 fps
INFO: 10 fps
INFO: 8 fps
INFO: 12 fps
INFO: 11 fps
INFO: 10 fps
INFO: 10 fps
INFO: 9 fps
INFO: 11 fps
INFO: 11 fps
INFO: 10 fps
INFO: 9 fps
INFO: 11 fps
INFO: 10 fps
INFO: 10 fps
INFO: 11 fps
INFO: 10 fps
INFO: 8 fps
INFO: 12 fps
INFO: 10 fps
INFO: 0 fps
INFO: 0 fps
INFO: 39 fps (+42 frames skipped)
INFO: 75 fps (+58 frames skipped)
INFO: 61 fps (+37 frames skipped)
INFO: 1 fps
INFO: 9 fps (+13 frames skipped)
INFO: 4 fps (+12 frames skipped)
INFO: 1 fps
INFO: 22 fps (+8 frames skipped)
INFO: 81 fps (+69 frames skipped)
INFO: 1 fps
INFO: 2 fps (+1 frames skipped)
INFO: 112 fps (+100 frames skipped)
INFO: 100 fps (+96 frames skipped)
INFO: 6 fps (+4 frames skipped)
INFO: 10 fps
INFO: 7 fps (+4 frames skipped)