Preview lag or freezing can occur when filters, transitions, high-resolution videos, or complex projects require more device resources than your Android device can handle. Please try the following:
1. Save your project, close Filmora and other background apps, then reopen Filmora and check playback again.
2. Update Filmora to the latest version from the Google Play Store.
3. Temporarily remove filters or transitions one by one to identify which effect is causing the lag. If playback becomes smooth, add them back one at a time to confirm the cause.
4. Test with a shorter video or lower-resolution clip to check if the issue is related to project complexity or source file size.
5. Preview lag does not always affect the final export — try exporting a short section to verify the actual output quality.
If the issue persists, submit feedback in the app through Mine > Feedback. Attach a screen recording showing the lag, along with your device model, Filmora version, and project details, so our technical team can investigate.
Why is my app lagging or freezing during editing?
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